The man just explained fluid dynamics so fluently just from experience. Mad respect.

@treatb09

28 күн бұрын

But he wants pressure pre flow of the turbine. Which means constant air drag on the blades designed to push air. Free air is cut by the turbine. So as air is input at less pressure for higher velocity it can balance pressure on the opposite side. But you will have turbo lag.

@MultiSoftE

23 күн бұрын

​@@treatb09improves scavenging

@treatb09

22 күн бұрын

@@MultiSoftE turbines in planes cut air to provide thrust. But need smooth flow as the plane accelerates or the turbines need to keep accelerating to compensate for the air pressure in front of the blade. Compressors cant compress without force. Smooth flow would mean the plane only uses thrust from combustion which has back pressure flow and issues and wasted energy. So the plane then compresses. Travels and that back pressure is negated. A turbo in a car though, you want that pressure balance because the turbine will be more reliable. Thats why by turbos are so much better. Though you have two, they allow compensation for each’s issues.

@svgPhoenix

18 күн бұрын

​@@michaelwilson2151 fluid dynamics =/= liquid dynamics 🤡

@Iceberg86300

18 күн бұрын

​@@michaelwilson2151air is a fluid & with the topic being airflow, he is indeed talking about fluid dynamics.

This man casually forgets more than I'll ever know

@robm6789

2 ай бұрын

😂 so true

@elijahrobinson2362

2 ай бұрын

Gale doesn’t forget stuff. Ever. The knowledge he has obtained over 6+ decades is staggering.

@garygray2528

2 ай бұрын

Gale banks isn’t Biden 🤣

@Subpac_ww2

2 ай бұрын

Facts!

@endurofan9854

2 ай бұрын

same for me 👍

We put a Gale Banks twin-turbo kit on a twin-engined boat back in the 1980s. Banks told us we'd melt the engine if we didn't do certain things. We didn't do those things. We melted the engine.

@kanalkanali

26 күн бұрын

Gale Bank is he that one man tolking in this video?

@slouchyz2207

26 күн бұрын

@@kanalkanaliyes

@ohmoperatorog7604

23 күн бұрын

Awesome story with a solid message 😅

@DanielinLaTuna

23 күн бұрын

Wish I’d known Banks in the day. But for Volkswagens, the go-to voice of experience was Gene Berg. He did real research and told us many items on the market, and much “folk wisdom” was simply malarkey

@MikehMike01

20 күн бұрын

@@kanalkanaliit’s literally written in the video pay attention

Lol just figured out why my 2015 is eating oil....thank you! Edit: finally got the turbo out. Had blown seals allowing excessive blow by and a chiped blade on the compressor wheel. Truck is a chevy k3500 lml 6.6l with 75k and 6k hours(fleet truck).

@jamescorfield534

2 ай бұрын

That’s wild!!

@willtancha7163

2 ай бұрын

I put an oil catch can on my vehicle

@panzerveps

2 ай бұрын

@@willtancha7163 That's awesome!

@foxbodyboys4483

2 ай бұрын

@@willtancha7163I put those on everything I own.

@mismanagedfunds

2 ай бұрын

@@willtancha7163yup, i run two.

What the hell does this old guy know? ABSOLUTELY EVERYTHING.

@bankspower

2 ай бұрын

He knows a thing or two, because he's seen a thing or two.

@Slide4nun

14 күн бұрын

@@bankspower does gale banks use farmers for his home and auto?

@dandiegidio7729

14 күн бұрын

Would you know why when I floor my car it starts to smell like burning oil but definitely a bit different smelling, and then it goes away? 369k miles but still. ​@bankspower

@cloxlolx

13 күн бұрын

@@dandiegidio7729Catalytic converters have a sulfuric type smell if that's what it smells like. Catalytic converters with that many miles tend to smoke and smell because the chemicals inside are starting to degrade.

@dandiegidio7729

13 күн бұрын

@@cloxlolx It's kind of like sulphur, yes. I guess that makes sense. The manifold converters are probably really old. Would that happen only at full throttle though? Thanks for the reply

The engineers who design engines get a lot of flack for their engineering mistakes that piss off mechanics, but they do get it right when it comes to how it should run from time to time. Thanks Mr. Banks for your wealth of knowledge.

@Slowhand871

2 ай бұрын

Car/truck engines are amazing. The guys repairing engines have the ability to to see what didn’t work. Hindsight is 20/20. And mechanics don’t have to deal with emissions. All reasons why I can’t wait for a good EV truck. The combustion engine is not needed by 85%+ of the population.

@joshbridges8410

2 ай бұрын

Totally agree! ​@@Slowhand871

@ccubsfan94

2 ай бұрын

What's funny is they catch a lot of flack, but it's mostly the accounting department that is the real issue. Add in epa and safety requirements, it's amazing that engineers can get anything done.

@Thestockxj96

2 ай бұрын

​@@Slowhand871 and to what points can you point at that 85% of the population doesn't need an ICE engine? Who are you to decide what anyone needs? Everyone needs to wake up to the idea that electric is far behind in terms of being a functioning, viable option for the average person simply due to all the inherent issues that come with owning an EV.

@davidgephart7886

2 ай бұрын

Electric vehicle suck I would never own one, and never will, I don't care what the government EPA whatever says

This man is just a treasure trove of great information

@johnhancock1855

2 ай бұрын

Agreed

@Louthemailman

2 ай бұрын

Years of experience Cant be beat

@JW...-oj5iw

2 ай бұрын

We are lucky to be able to receive his advice. Some guys are gruff and impersonal. Gale is decent and generous.

@knighthight3546

2 ай бұрын

Absolutely. I'm afraid knowledge like this is rare and forever fleeting.

Gale, once again, you've honored functionality over profit, nicely done!

THIS! I drive a Mk 7 Golf R, and most people like to swap the turbo inlet pipe right away. The problem with that is the aftermarket TIP doesn't create proper vacuum across the PCV port. The Mk 7 PCV is pretty bad, too, so swapping it for a (much better) Mk 8 PCV along with a Tiguan breather hose allows you to plumb turbo outlet boost pressure through the PCV breather, creating a venturi effect that allows you to run aftermarket TIP's without losing crankcase vacuum.

@xxsoulhuntxx

2 ай бұрын

Is the mk8 a direct swap? I've got a mk7 gli. Never heard of this swap

@jameshaulenbeek5931

2 ай бұрын

@xxsoulhuntxx *you can block off the extra venturi hose if you don't plan on using it. Otherwise, it will need to be connected to a source of boost pressure near the compressor outlet.

@jameshaulenbeek5931

2 ай бұрын

@xxsoulhuntxx my other comment got deleted, I guess because of the part numbers. Let's try again...06m906094 06q103495b 06k103210d

@kleetus92

2 ай бұрын

PCV.... positive crankcase ventilation... Where does vacuum ever enter into this? What about venting the tube to atmosphere or a catch can? There's no vacuum in front of a diesel turbo unless your filter is clogged or you have some eco-garbage in the system. It simply pushes vapors into the intake based on the amount of cylinder blowby. That's it.

@edwatts9890

2 ай бұрын

​@@kleetus92: Shape/geometry is important. "Bernoulli effect"!

Always love Gail’s lessons… feels like I’m a 10 year old in the shop listening to grandpa share wisdom.

@justincooper5189

Ай бұрын

And because he puts everything in simple terms, a lot more people can understand what he is saying. So he can pass the knowledge on that much easier, and more people can have better engines in their vehicle.

I'm a machinist all my life learn from a master from Cuba in Puerto Rico and they are no one more right than you Sir and that's why many people have many problems because they don't follow real factual knowledge about it and my respect for you Sir

@itzyaaboyytht5550

28 күн бұрын

No you don’t

@Lab4ny34

24 күн бұрын

​@itzyaaboyytht5550 bro what?

@DefendTheStar

15 күн бұрын

They are should be there's. He just made a typo is all.

If you don’t pick up what this man is putting down then it’s your fault period. He is the know in knowledge with Diesel

@michabazkiewicz7181

2 ай бұрын

Bro there are people that cant explain simplest shit to you. If Gale knew quantum physics we would have space travel already

@desertsavagery

2 ай бұрын

​@@michabazkiewicz7181 honestly I wouldn't be shocked if he did, that man has more locked up in that upstairs vault than most people I know by a long shot.

@GT1Vette

2 ай бұрын

Not just diesel. I remember his cars back in the 80s 90s

@FxckTheAFT

2 ай бұрын

While he knows his shit & makes great products, he is involved with the epa on going after emissions defeat devices so he kinda really sucks at the same time

@imrf

2 ай бұрын

@@FxckTheAFT Because he's not dumb and doesn't want to get fined out of business. It's smarter to work with them then to try and take them on.

KeyPoint “you got to know what you’re doing “these fools with the pretty metal pipes do not.

Unbelievable how much knowledge this man has, until you realize how many decades hes been doing this shit

@sweettooth7124

2 ай бұрын

This man been hotrodding since the 50's-60's. I don't know why people doubt him

@bigj3086

2 ай бұрын

It's fair to repeat this statement for just about any old timer in any field of work. I usually just shut up and listen when my elders speak. It's what I'm trying to pound into my sons head!

@sweettooth7124

2 ай бұрын

@bigj3086 especially if he's considered a pioneer in the industry and has his own shop which he's also ran for decades.

@bigj3086

2 ай бұрын

@@sweettooth7124 for sure

@Nikko780

2 ай бұрын

@@sweettooth7124 His own shop that develops stuff for military OEMs

This man knows way more than I will ever know and is a legend

Thank you. This is so important. And a lot of people just don't understand the concept of true airflow in engine dynamics. Wait until you start doing this on a turbo fan and turbine engines.

Nitrous backfire said OEM plastic intake no bueno 😂

@Dr.Westside

10 күн бұрын

If you're running nitrous through a composite intake , you deserve what you get .

Man, I learn so much stuff from these shorts. I would honestly pay good money for the information you guys put out.

@jacksonreid6412

2 ай бұрын

Don’t give them any ideas 😭

@osmacar5331

2 ай бұрын

Aye. A series of books with imagery associated to discussed topic, diagrams too. Well, we can dream.

@wildcard9724

2 ай бұрын

Just buy their products with the assurance you will get the best!

Thank you so freaking much for providing your expertise to the public for free through this platform. 🎉🎉 Its really a great public service.

I was going to buy one of those intake horns for my 2020 gmc 2500 duramax, and spend about 500 bucks. after watching this video. I’ve changed my mind, I now know that my factory intake horn is better than the aftermarket. thanks Gail. I respect this guy, whatever he says I do.

Gale is such a damn legend of experience

Gale, I hope you never retire. I’m thinking Id like to see you doing this kind of quality research and mods 20 years from know.

@justincooper5189

Ай бұрын

Everyone retires, it's just a matter of how and when. He may go another 20 years like you wish he would, but then again, his knowledge might be lost tomorrow. I simply hope two things: that he enjoys his work, and that he took extensive notes for future generations to learn from.

That’s why I took that CCV hose off the intake horn and dumped it under my truck. I don’t want oil getting put in my turbo

My crankcase vent blows out onto the road. As God intended.

@tuckerbrandstrom575

2 ай бұрын

The environment can have a little oil vapor as a treat.

@dylanmcgregor2515

2 ай бұрын

Heel ya

@longrodvanhugendong9742

2 ай бұрын

keep that black top black

@854XTOY

2 ай бұрын

Tier Zero FTW

@Mosstachio

2 ай бұрын

Giving the oil back to the earth 😂

No-one else comes even close to his knoweledge and wisdom

I read your book back in the early 80s. Fascinating as a kid, still fascinating as an old man.

@yws4645

2 ай бұрын

What was the book about?

@CommieHunter24

2 ай бұрын

@@yws4645 It's called Turbochargers. Printed in 1978.

@waynekc01

2 ай бұрын

​@@yws4645engines

I literally learn something from you every time I watch. Always great to listen and learn and my 2024 Ram 2500 Cummins is definitely gonna get all your stuff to make it better and last longer. Thanks! 👊😎👍

This whole system reminds me how back in the day before sensors were designed everything mechanically was timing itself. It seems unnecesary to make improvements that will kill turbine or engine if things go wrong.

He knows the nature of air flow

I got to talk to Gale Banks back in 06. Had a shop and was researching his product. He took an hour to explain the engineering behind it and why it worked. I have never met him in person, but I would buy ANY product Banks produces. Quality American parts from a quality American

When the godfather of diesel speaks, the wise listen.

Pay attention to the old school. They ain't going to be around forever. Their knowledge is a gift.

Great to hear engineers talking to market issues

Excellent advise, the man knows what he's talking about. Don't mess with turbo-basics...

God bless this man. Few like him these days! Thank you for your knowledge

Air gap just learned me something. That’s awesome Mr Banks. Thanks for the good teaching.

This man has forgotten more than the people who make the engines ever will learn

I am glad you mentioned the Anti-Surge thing. I didnt know about that, but now that I do, I bet that exact fact will get more and more relevant with faster responding turbos.

I remember talking to him in 94, talked me into turbos for life.

Gale never ceases to amaze me 👍👍 thanks for the info Mr.Banks👊

I could listen to this guy all day

The issue the engineers did was make the part plastic. I can almost guarantee a lot of people buy the aftermarket ones because they're metal.

@slickstrings

16 күн бұрын

Its not really an issue though is it. Its lighter, cheaper and performs just fine. People think it must be metal to be a quality item but i bet they dont want to pay for it retail.

Never trust always verify. I understand that this system is designed to work correctly but that doesn’t mean there isn’t room for improvement . Sometimes materials are left out to meet margins or there is manufacturing complexities that can’t be afforded. Then theres the government meddling into design who want to cripple and/or control systems which ultimately interferes with ownership rights.

@DangerousFreedom88

2 ай бұрын

Yeah but if you register with the state you're transferring ownership to the state and you have the usufruct privileges of driving it and maintaining it....FOR THE STATE. SO ownership rights huh? Bring that up with the state and DOL or DMV. Only if you have the original certificate (not a copy) will you have true ownership rights.

@GiantMeteor2024

12 күн бұрын

So, you melted your engine? 🤔😂

You’re one of the brightest, Mr Banks..

The difference between engineering and research and just aftermarket parts that look good...

Gale banks is such a legendary wealth of information

This man knows his stuff .

Mr Banks is one smart dude. I've followed and used his products close to 30 years, I've yet to be disappointed. It's said that imitation is the best form of flattery, well Mr. Banks must be blushing!

His understanding is unbelievable. Every aspect of every component. Science!

Met You at Hondo Boats 1974ish. Hurry Round Hondo. God Bless You and Yours.💛

This man knows things. He has “found out” about things we have only imagined doing.

If there is a Guru of Turbo Power it is Mr. Banks. GOAT

Everytime this guy talks I learn something real and it’s so appreciated

thankx for translating English to English with the subtitles there. very helpful...

Mans a genius. He plays chess, we play checkers.

Yes finally. The crankcase pressure at wide open throttle is controlled by the pressure of that intake tube. You can measure it at the crankcase using a 1-bar map sensor. I have a DIY VIDEO How to measure the crankcase pressure in my channel on my turbo V8 engine. This is the 99.9% overlooked aspect of PCV systems which cause people to blow oil from their engines and this is what started the catch can revolution- people catching the oil instead of fixing the problem by correctly measuring and setting their crankcase pressure. Arrgh!

@kleetus92

2 ай бұрын

don't confuse diesel with gasoline. their intake and crankcase pressures are completely different.

@Wabits

2 ай бұрын

@@kleetus92 That is like saying dry sump is different than wet sump in gasoline applications. Of course there are variations across all manufacturers and engine types, nevertheless they ALL Require measurement and Specific Setting points which can be done using the same Technique e.g. SENSOR and Data-capture , this MUST be done for ALL Performance engines in the world modified whether diesel or gasoline, I made NO Specific gesture towards either nor did I address dry sump yet they all fall under the same principles which is that positive pressure is NEVER DESIRABLE no matter wet dry or diesel or gas

@Wabits

2 ай бұрын

@@kleetus92 In other words Diesel and gasoline work the same at wide open throttle. Both require intake pressure drop and kinetic energy control via plumbing design and filter selection. They can all be measured and set via sensor + data capture and this needs to be done. It makes no difference whether diesel or gasoline as they function the same at wide open throttle which is where the aspects of oil control within any crankcase for any engine in the world depend on pressure setting and control over the organizational kinetic energy components of gas and dissolved partial pressure of combustion byproducts etc...

@kleetus92

2 ай бұрын

@@Wabits Except... no... a gas engine spends most of its life under a vacuum, a diesel does not. And even if they did... the vent tube dumping oil vapor into the turbo intake doesn't make any difference whatsoever on a diesel.. again, you can run that tube to atmosphere, and it won't make any difference other than maybe leaving a few drips of oil on the ground, vs leaving oil residue in your intercooler...

@Wabits

2 ай бұрын

@@kleetus92 Crankcase pressure has an influence on ring behavior , gas scalar pressure forcing up oil into the ring pack on intake stroke and early ring switching, and ring flutter, all caused by high crankcase pressure in diesel engines. I Suggest you spend some time reading Published PCV research for diesel engines.

Gale Banks has forgotten more about diesel engines than most genuines will ever learn! I've said it before, and I'll say it again, that man is a National treasure! Everything he builds is so well thought out and tested, there's just no comparison!

I use a gauge called a manometer to diagnose mixture control malfunctions regularly on the BMWs I work on daily. Crankcase pressure is critical if you have a MAF sensor. Never seen a CEL from CCV malfunctions on MAP based engines like the W10/W11 Mini Cooper.

@nyplantings2420

2 ай бұрын

I'd like you to have a look at my 5l supercharged Range Rover with occasional lean code and high positive ltft's with an off idle stumble and surging ram's at cruise. Ugh.

@danielpeck6269

2 ай бұрын

@@nyplantings2420 If you don't find anything from a smoke test the pop the intercooler off to inspect. I've seen those supercharger intercoolers develop a pinhole leak on the inside that drips into the intake causing random misfires.

@theupscriber65

2 ай бұрын

I can't use the manometer. Whenever I pick it up, it immediately goes to 200%.

@megodlike--

2 ай бұрын

What about turbo bmws?

@allmycarsisbroke

2 ай бұрын

@@megodlike-- I don't know about yours, but my '08 335i twin turbo has wastegates. The advice from Mr. Banks in this video is much much applicable to turbocharged diesel trucks, many of which run big ass single turbos or compound turbos, and I don't think most of them have waste gates. Not saying it's a worse system necessarily, just a different one. The surging he's talking about occurs when the turbo is spooling super hard and then you come off the throttle. If you're modded to the gills and sucking more air through the intake than was ever intended, and if you've removed the valve that's supposed to open in case of a potential backflow situation without putting any other failsafe into play, you can end up with a big turbo spinning super hard, exhaust pressure builds up, and builds up, and builds up, and it's that pressure that eventually creates so much work for the turbo that it's no longer able to continue compressing more air, so instead the accumulated pressure starts to overcome it until it ends up bringing to a stop and then forcing it to spin backwards. That's TERRIBLE for the turbo and bad for the engine, too.

Constantly dropping knowledge. Thanks Mr Banks!

Man I'm glad I saw this before I ordered my kit

There is nothing more awe inspiring than someone who has 40-50 years of every day experience in a technical field. The amount of knowledge, and references they tend to possess is absurd.

The engineers who design these engines may be the bane of mechanics everywhere but they have the science education and knowledge and know what they're doing. Might be worth giving them some credit every so often.

I've never understood why people think that they know every piece of automotive technology better than the engineers that designed it. Certainly, there is room for improvement in some areas if you're willing to deal with the consequences, like a louder exhaust system or defeating emissions devices, but for most systems, most driving situations, and the vast majority of drivers, the OEM got it right.

@IanLikesVideosSometimes

2 ай бұрын

Exactly!

@DaveO-ts8dw

2 ай бұрын

I've been saying that for years!

@davidsawyer1599

2 ай бұрын

Mighty Car Mods of all channels did a dyno test of various intakes. They tested the OEM and filter as well. Not one aftermarket intake system performed better anywhere in the rpm range than the OEM.

@Doctorevil666

2 ай бұрын

Never accept that the manufacturers know best. If they did it wouldn't break or wear out they build to a price and are controlled by accountants. Gale on the other hand is purely about making the best it can be

@christophernuckolls9964

2 ай бұрын

@@davidsawyer1599 You need to reread what I said. I never said that aftermarket can't perform better. Try again.

While I agree with Gale in the case of an L5P. In virtually all other generation of Duramax the intake horn is like a pancake going into a 4” tube. The L5P has a much better intake horn than all other generations.

Turbo flutter sounds cool 😎

Will buy absolutely every product this man designs and sells. GB is Living legend. Pedal monster on my F150 is game changer!. exhaust next.

Professor Banks can explain anything!

Used to make fun of banks, now I like the explanations. Good marketing, seems honest, and informative.

I recall reading about Gale Banks Turbocharger Engines, in the Late 1970's / Early 1980's! Definitely knows his stuff!

Mr Banks, I don't own a diesel, never have... But I grew up watching Trucks on Spike Tv... That's where I first heard about Banks. I'm sure he's heard this enough, But this man is a genius and anyone who works on a vehicle wishes that all engineer's were as smart and considerate of their design choices as Gale...

my teacher "manufactures spend thousands making a car and it gets ruined in 10 minutes with your cold air intakes." 😂

Gale Banks is a genius. I would follow any and everything he says I have a Ford 7.3 L power stroke 1999. It’s stock with 400,000 miles and a six-speed manual. One day I’ll have myself Cummins or a Duramax that I can build up to a reasonable horsepower but more important than power to me is reliability and I will not give up reliability at the cost of extra power.

@tyclark8162

Ай бұрын

Hey Matt, I have the same truck as you. Only 78k on her, f250 7.3l CrewCab n automatic trans that has been rebuilt. Can I ask what all you've changed out since new? Ole field mechanic/fab n welder/tires ect. Ole paradog pushing 70s. Thanks, Ty

I'm no diesel person, but the fact that Mr Banks is so passionate about diesel power and is so against diesel smoke is absolutely commendable. There's a reason he's at the top of the stack in his field

Install catch can then you eliminate blow by!!! It's not a old thing, but yes Mr Banks I give it to you, you have been producing some killer soot machines for a very long time and you have proven that you are one of if not the best Diesel engine man on the planet but I have 1 problem with that and it is! LS THE WORLD!!!!!🤘😆🤘

I understand a quickly pick up a lot of car and mechanical information. This I don’t understand, goes over the top of my head. 🤣. I’ll have to watch the full video

I would love to do classes with this man and just learn some of his knowledge 👌👌

You knowledge is marvelous

At this point, there should be a law that mandates every ASE course include watching every video this man makes.

Great post. Thank you!

This guy is a National Treasure 👍👍

GAIL banks has been around since I was a young boy.He definitely knows his shit.

As always, great info and explanation!

Thanks for the heads up on that.🙂

When this man speaks, intelligent people shut up and listen. 😊

Great point Mr Banks .. alot of cars tend to burn oil do to over pressure of the intake, that must be my problem that when I hit 60 mph or above I get burning oil smell on the Jeep tj . 4.0 .. That could very well be the culprit of the issue. I have a aftermarket Airaid system . FYI

How bout those 2 pin front crank shaft design. Where the balancer goes on. They should have made it a solid Key shaft

You could also just run a catch can between your breather and intake to catch the oil but still have the vacuum on the crank case

@dylanmcgregor2515

2 ай бұрын

Or both

I worked for a large aftermarket Performance Shop for a few years. Some of the stuff that came out was really nice, but a lot was junk. Definitely have to be careful what you put on your vehicle.

And this is why this guy is not in a retirement home! If Diesel owners knew and understood the dynamics of the engine modifications and upgrades like this guy does the world would be a better place lol

Mr. Banks would love to see a series on what modern engines and emission systems can do. Aka what the brands get right and why just deleting everything is a problem. They’re engineers for a reason lol

Turbomachinery and fluid dynamics are complex subjects.

Thank you, Sir.

Brilliant guy. Wish he could make a header for my jeep that didn’t crack

Thank you for the knowledge sharing

Used to flare the end of the oil separator on the air cleaner on Mercedes 617.952 and 951 , would pull a little more vacuum in the crank or maybe take care of worn out blowby

Dale Banks! Master of of the turbo diesel!

An experienced Audi tech told me to just use OEM parts, and don’t alter the car with aftermarket parts. The mechanic said Audi has 1000s of experienced auto engineers spec cars for different purposes. For example, when you boost HP through ECU you alter everything. Now with that higher HP(speed) you need larger or better quality brakes, maybe different wheel size and/or tires. Can that suspension handle hitting turns at 70 and not 45 like it was designed? Buy the race edition for that

This man knows how air flows. His Diesels are power houses.

Thank you for sharing

There are situations where you can improve the oem intake system. For example, Honda knew they could have built an intake that produces an extra 20 wheel hp but jt would have required the consumer to use tools to change the light bulbs. The compromise was to have a worse intake but the aftermarket was able to dyno prove a cold air that showed massive improvements. When I looked at the aftermarket intakes for Diesel vehicles, I didn't see any improvement in horsepower. It seems that with modern emissions and computers, there isn't a big gain in replacing the oem tubing. It js already built to deliver the best flow at stock power levels. Only after you increase the power output, do you need to really start changing the exhaust and intake piping. Even then, you have a downside in noise which does harm the driver on longer drives