Another enjoyable and very interesting video Dunc, keep them coming!

Excellent video as always thank goodness I only have 1 on the list the turbo timer thank you for keeping my car running can't wait to have the clutch done see you soon thank you

@racedynamix

10 ай бұрын

Thanks Paul. Hope it's sorted soon 👍

Very interesting share your opinion on everything you mentioned

@racedynamix

7 ай бұрын

Thank you 🙏

Another gem of information...You have a new subscriber

@racedynamix

12 күн бұрын

Welcome aboard! 😎

That’s answered some of my questions! Thanks

@racedynamix

10 ай бұрын

😁👍. See you later in the week sir.

@Pjbendejo

10 ай бұрын

@@racedynamix The nervousness has set in again! £££’s later let’s see if it makes a difference

Hi Duncan, Great video. Thanks! Ramping up the production quality 👌

@racedynamix

10 ай бұрын

Thank you very much Reuben. I am trying to learn new skills in premiere pro to make it look and flow better.. Lighting and sound are easier to control in here but not as I want it quite yet. I would love to get the lighting/set up in the workshop and dyno right but that is a nightmare of strange colour casts at the mo. 🙏🙏

@ReubenSchoots

10 ай бұрын

@@racedynamix Yikes, I often film in my workshop with small machinery, which challenges me.. Not quite as intense an environment for filming/recording as your industrial fans/ventilation, dyno and a WOT pull. Great stuff mate.

@racedynamix

10 ай бұрын

@@ReubenSchoots cool. The dyno environment is horrendous... Big fans that blow tripods over, drown out voices and engine notes andlighting (or lack of) from hell.. It is a challenge for sure 🤣

like your style and content

Another Great video Duncan, as a new Subaru sti owner it’s brilliant watching your videos and couldn’t have been more of a gent mapping my widetrack sti last week at Surrey rolling road. Straight forward and sound advice.

@racedynamix

10 ай бұрын

My pleasure Mark. I may use the old map from your car in a future video 😉

@markmillington2499

10 ай бұрын

Taught me a lesson even if you buy a car that is apparently standard take it to somebody that knows and have it checked out. Could of quite easily carried on driving it without knowing, it’s stuff like that gives these cars a bad reputation. Yeah happy for it to be in a video would give buyers like me at my age 😞 a heads up.

That Cobb shifter news is worrying.. Please do a part 2.. would like to see catch cans as a topic.

@racedynamix

10 ай бұрын

It's a beautiful piece of work but it can cause people to rush the synchros and break them. On a wrx std 5 speed the shock can be very bad for it. On a 6 speed the only danger is synchro. On a dog box though they would be fab. Catch can.. Good shout. I do personally believe in these but there are good and bad.. Will have a think about how to show this in a video 🙏

Great content, I’ve already fitted my headers but I think the standard will be going bk on with the decat up pipe . Thank u for your knowledge and wisdom. Can u blank of the dump valve on a standard ej205 2001 with no other mods ? And no running issues. On standard boost

@racedynamix

10 ай бұрын

Thanks. Yeah good plan re the headers imo 👍 The only slight side effect is some jerkiness coming on and off throttle.. Try it to see whether noticeable for you 👍

I can purchase that bee r rev limiter now as it wasn’t on the list lol, some quality info there thanks Duncan I do like a quality dump valve though but that goes back to my Renault 5gt turbo days lol

@racedynamix

10 ай бұрын

Nooooooooooooooo 🤣

@bunsofsteeeel

10 ай бұрын

I remember years ago people having to take off zero sports induction hard pipe elbows as they were too restrictive when being mapped but they looked nice lol

I had to skip to 10 first watch, I just knew this was going to happen... then re watched. Now I understand more about the toyos after a good angle grind, that is horrendous..

@racedynamix

10 ай бұрын

Yes mate. If you compare the flow and blending within RCM headers for example they are shocking in comparison. I didn't even mention the horrific flexing joint 😂

I don't really follow the forums like I used to, but it did always amuse me how there always a 'trendy mod of the time' the one I never understood, and still don't, is bonnet struts that get in the way and reduce access.

@racedynamix

10 ай бұрын

Oh I like bonnet struts.. Probably born from when I knocked the std bonnet stay away and the bonnet landed on me 🤣

I love your common sense approach. A lot of what you are saying goes for all cars. Cheap parts a never a good idea if you are keeping your car.

@racedynamix

10 ай бұрын

Thanks a lot buddy.. I try to keep it sensible 🙏

#9 I agree but I will find out as I have egt going in on a factory header and will see what temps are like prior to doing the mod pending I feel there enough of a temp difference to do it

@racedynamix

10 ай бұрын

Be very interested to hear the results of that 👍

Another great, informative video! Thank you! If we are playing "Scooby mod bingo", the only mod I have on my FSTI that is on the list is the Cyl4 cooling mod and I was skeptical about it from the start, so I used a heat gun to check before and after, and it did bring the temp on cyl4 down a bit, but we are talking 3-5deg C (taken on the surface of the head). The overall temp of the coolant was also reduced a little bit (around 5c). Those tests were only done at idle when the car was up to temp and the results are negligible so my conclusion: Does it need the mod? No. Does it hurt to have it? probably not. If I get another Scooby, will I do the mod again? I doubt it. I am a bit concerned that the only knock sensor is on cyl4, so if (big if!) I have reduced the probability in knock on 4, have I reduced the overall knock protection??

@racedynamix

10 ай бұрын

Great point re the knock protection.. I wish I knew how detailed the information that a std ecu had on knock but I don't.. Syvecs will listen to all 4 individually.. It knows when they are firing and takes appropriate action with that cylinder alone. I would guess the std ecu is listening to all 4 but takes action overall. I doubt that your fears are real.. As cyl 4 is no more likely to die than any other in my experience.. But warrants further investigation perhaps. Thanks for that thought worm that will live in my head for a while now 🤣

Would be interesting to hear your take on Catch Cans/ Air Oil Separators. Also aftermarket air intakes (cone filter things), heard the stock one is good enough for most applications!

@racedynamix

10 ай бұрын

Catch cans have been mentioned by another in the comments.. It will be done 👍 Air intakes is dependant on power target.. What are you looking for?

@antares4755

10 ай бұрын

I've got a 2006 FSTi, eventually looking to get around the mid 300 range, nothing extreme but a nice bump. Got my eye on the TD05 18G turbo too...

@racedynamix

10 ай бұрын

A genuine 18g is a great turbo.. But a cheap one not good. A vf43 or vf48 is a safer bet 👍

@Scoobybowman

10 ай бұрын

@@antares4755 if your willing to drop some Money into the engine the vf41 which is standard on the fsti can achieve 371 with supporting mods @racedynamix can vouch for that 😉

@AmirPomen

10 ай бұрын

​@@racedynamixi found out the only time a cheap chinese turbo worth doing is to send them for seal and bearing replacement using genuine unit at turbo rebuilder... Which usually still abit cheaper than branded name turbo unit... Alternatively, to limit the boost up to only 1bar of pressure...generally thats the borderline for them cheap turbo to fail on the seals...

Brilliant video. Great to see someone put their neck on the line and say dump valves are nothing but trouble. I put one on my fiesta turbo in my early twenties. It was exactly as you point out. Nothing but trouble. 100% not putting one on my foz. Thanks for another great video.

@racedynamix

10 ай бұрын

Thank you very much buddy. Appreciate the positive feedback from a fellow YT person. Opinions are always something I have had.. I don't think I will be on toyosports Xmas card list 🤣

@kjones7270

10 ай бұрын

Every Subaru tuner that has a name will tell you block it off

@racedynamix

10 ай бұрын

@@kjones7270 indeed.. Unless they sell dump valves 😉

@Scoobybowman

10 ай бұрын

@@racedynamix depends they may send you some coal 🤣

@racedynamix

10 ай бұрын

@@Scoobybowman 🤣

Thanks for the video, bit unfair on surefire though, they are a decent replacement for failed standard ones and are significantly more cost effective.

@racedynamix

10 ай бұрын

No worries.. Surefire £170 versus £140 for brand new subaru sti ones. I know which I would fit 👍

@STIStuff

10 ай бұрын

@@racedynamix that’s not correct proper OE ones on import car parts are £100 each.

@racedynamix

10 ай бұрын

You're right.. Sorry about that. The std ones are better though. They fit on the plug better, whereas the surefire ones kind of stick when pushing on. Perhaps a little unfair of me.. But I have had many customers with misfire issues with new surefire coils and almost never have a problem with the std ones.. Even second hand tbh. Some are showing signs of age now so difficult to get good second hand ones. 👍

Turbo timers on water cooled turbos is always a favourite of mine lol. People who fit a Chav valve on a stock wrx with 0.8 bar of boost need a slap, the oem will make a noise if the car is modded/mapped well. Cylinder 4 cooling mod has surely been created by someone who ran out of things to do on their Subaru, or listened to all the Facebook thermodynamic experts that can diagnose an engine failure with their x-ray vision from an 8 second mobile phone video 🤣🤣

@racedynamix

10 ай бұрын

😁👍

Bugger.. I am guilty of one of these and that’s the cylinder 4 cooling mod lol.

@racedynamix

10 ай бұрын

I'm happy to be persuaded on that.. But just never had the need for it myself on any of my subarus. Thank you for watching 🙏

@dandantheminiman

10 ай бұрын

@@racedynamix well I guess if nothing else as long as it doesn’t leak it can do no harm of it doesn’t do no good. I listened to the internet and they told me I should do it 🤦🏻‍♂️. In my defence we have a nod a little like this in the classic mini world to help coolant flow through the block as you end up with a dead spot on no4 which tends to running higher ( different car and different engine I know but this is the best defence I can come up with)

@PedroFTeixeira

10 ай бұрын

I've done it to, 4 years ago. I track the car... a little more cooling can't do any harm. Haven't had an issue, but I also don't know if it's doing any difference.

I have my stock bypass valve and a new tdo4 oem turbo, prodrive exhaust, killer b inlet and Cobb intake. I had the 02 dyno’d and it put down the same power 252hp and 250 tq.

@racedynamix

2 ай бұрын

Was it mapped?

I believe that was my short shifter 😃. And yes I have a issue with 4 gear selection on boost wonder weather this caused it? Hoping I can bump into you for a chat next time your at triton?

@racedynamix

10 ай бұрын

You can have it back now 😁😁. Thanks for the loan. And yeah happy for a chat etc 👍👍

Another great Video Duncan I have fell foul the the gaskets destroyed a vf48 turbo I will only use steel gaskets in the future Have you ever tuned any cars with arashi turbos and your thoughts on them

@racedynamix

10 ай бұрын

Thanks Grant🙏. Yes I have... They weren't impressive. Fastline would be my recommendation 👍

@grantufouniquefilmingopera5301

10 ай бұрын

Yes the vf400 I would of gone for knowing what I know now for £200 more🤦🏻never mind

i'm actually running the cheapest maxpeeding rods TD04L-13T turbo on my sf5 forester for more than 25.000km right now. no problems at all. only thing i did was port the hell out of the turbine inlet, port the wastegate and check the whole turbo. Im also running a cheap ebay bov, i polished the inside, fitted a much stiffer spring, and used fitting tape and orings on all the parts. But i have to agree that there not that great.

@racedynamix

10 ай бұрын

Hi. I'm not saying they all are rubbish but you were obviously well aware of the potential issues and mitigated them.. Well done 👏😎

Got a question. OEM newage recirc value. I had one fitted to my hawk sti and bought another one as it looked nearly brand new ( newage ) but the spring is piss peak compared to my nearly solid one that I took off. Driving doesn't seem much different. Guessing it was from a WRX and not a sti. Any concerns with boost lower down ?

@racedynamix

10 ай бұрын

Hi Ben.. They are the same part for wrx and sti afaik.. Spring should be the same. It could make it hesitant or more likely to stall if it isn't shutting quickly enough I believe

I had done everything you said to do and nothing from this video. I'm accidentally a professional tuner🤣

@racedynamix

10 ай бұрын

Lol. Congratulations 👏👍

You’ve been dying to cut them headers up 😂

@racedynamix

10 ай бұрын

Absolutely Richard 🤣🤣

Good Stuff 👍 Is it safe to run the dump valve blanked? 2002 Impreza Sti , Mapped by yourself a couple of years ago

@racedynamix

10 ай бұрын

Thanks Craig. Is yours running mafless or std set up? If mafless, so long as the dump valve that was there wasn't leaking it won't make a difference. If std set up then it can make it a little jerky coming on and off throttle.. But try it and see 👍

@craigbetts9399

10 ай бұрын

@@racedynamix Standard mate, just a decat and 3 port boost solenoid. Just wondered if it was likely to have any adverse effects on the turbo ?

@racedynamix

10 ай бұрын

@@craigbetts9399 personally I haven't seen any negative effects but I am sure people will try and blame a turbo failure on it. If the turbo breaks.. Upgrade time 😉

100% with the cooling mod on number 4 never heard of it and never had any probs with no4 but the last 2 years it sceem to be a think wast money on crap lol

@racedynamix

10 ай бұрын

👍

@gavindring6959

10 ай бұрын

Ive worked with andy /with him / ESL for 5 years naking engines / car and had no problems with no 4 like you say snake oil /just a scam lol@@racedynamix

The purpose of the cylinder 4 cooling mod was due to the ej257 ringland issue, I believe. There was testing done on engine cylinder temps and found cylinder 4 is at a higher temp than the others. @GetADomTune has some great info on it. /e some redundancies

@racedynamix

10 ай бұрын

Thanks.. I will dig out that testing. 🙏

@racedynamix

10 ай бұрын

Interesting that these are being marketed to EJ20 owners.. Solving a problem that doesn't exist for them or doesn't actually cause any Ringland issues on that engine.

@PrimePlace

10 ай бұрын

Well, I think the testing was prompted by the ringland failures that were happening so often over here. Results showed a significant decrease in temps in any EJ. Knock reduction in cylinder 4 ftw! (From my basic reading comprehension, at least... haha)

@toplistcrew7645

2 ай бұрын

I would say use the cylinder four cooling mod to help prevent future issues with inadequate cooling efficiency. This is the real reason to put one of these on. The original get a dom tune is the way to go. However wouldn’t parallel fuel lines fix this issue as a lack of fuel consistency in cylinder four from the stock fuel line setup could be fixed with parallel fuel lines as the stock layout causes cylinder four to not have enough fuel and cause ringland failure?

@PrimePlace

2 ай бұрын

@toplistcrew7645 No, parallel rails do not fix this issue.

I put samco inlet hose, expensive af and I was very dissapointed with it, inside it had silicon strings and flops that I had to cut out, from the outside it didn't fit at all to the intake pipe...more cutting. Not even talking about the extra nipple I had to plug. I thought samco is the best hose manufacturer. Long story short I ordered STi red silicon inlet hose, the quality is incomparable and I will be switching it asap. I would't do all this but my plastic hose had some cracks so it needed changing, very brittle after 20 years...

@Pavl9k

10 ай бұрын

And thank you for this video, I will always listen to an experienced subaru expert to learn more. Also Luke Towan (subaru daily show) has a very nice video series about EJ cooling and 4 cylinder mod, but if you have equal length headers you should be fine (I installed it because I like to tinker with my car even though I am aware that subaru engineers probably know better than me)

@racedynamix

10 ай бұрын

My pleasure.. I think with times as they are at the moment some mfrs are cutting some corners on quality. I did see a great solid inlet pipe recently but can't recall what make it was. Good quality and price too iirc. Thanks for watching 🙏

Have you had any issues with the Cobb inlet piping or any of the other, i got one thinking it would be reliable as my stock one was done for.

@racedynamix

12 күн бұрын

Cobb make great stuff imo 😎

@Hackinheadz

12 күн бұрын

@@racedynamix Excellent :p i was like wait should i have went oem instead. First turbo Subaru, have decided to go the tactrix route and learn to street tune myself. Going over everything making sure i have a solid platform before i start going at it. Thanks for all the videos!! '12 FXT 4eat(sadly).

Any way I love the original shifter throw. I only want it firm it up a bit ... and watt is my best option if the Orem inlet is damaged

@racedynamix

10 ай бұрын

👍 I will try and remember the details of this great solid inlet pipe a customer had 👍

@tdro98

10 ай бұрын

@@racedynamix yes please let me know if you the name of find it . And when will an better header be needed \ what’s the stock capable of ej 205 for reference

@racedynamix

10 ай бұрын

@@tdro98 std unequal headers are good for 395bhp on my experience. Porting out those to the gaskets mark and they are good for lots 👌

@kjones7270

10 ай бұрын

​@@tdro98 anything 5ply silicone wall or better.. Mishimoto

@mynopensd

10 ай бұрын

Yep, that's a short shifter scored off my theoretical shopping list. Maybe upgrading the bushings is a better option? Mines the 5 speed WRX, I don't drive it like a lunatic and I'd agree that slowly and gently is the way (and the only way from 5th to 4th.)

Sorry Duncan but the sound of the old school HKS SSQV takes me back to my RX-7 when I first got it, does nothing for the performance but hits me right in the nostalgia to being a teenager again 🤣 Another one is the silicone inlet, I only did that cause it makes funny noises when I come off chat, stupid mod for performance really 😁 and the REAL cheap ones I'd be terrified to run

@racedynamix

10 ай бұрын

Lol. Most of these being sold now are rip offs and utter rubbish 😂

@JohnDoe-tx2ys

10 ай бұрын

@@racedynamix yeah that's the bloody issue with the HKS ones, I had to do some real due diligence to not get a knock off

Im guilty of the silicone inlet pipe. Just dropped mine off to garage to have some bits fitted and this is one of them 😢

@racedynamix

10 ай бұрын

How flexible is the silicone inlet?

@hussainqureshi5016

10 ай бұрын

@racedynamix Seems to be ok, got it off MB developments who were breaking a hawkeye sti.

What headers brand you recommend I have a Japp speed headers that the previous owner fitted I’m not sure weather they are any good. From your experience if I was to want more power in the future would there need replacing?

@racedynamix

10 ай бұрын

Up to just under 400 bhp the std sti headers and uppipe are amazing. Beyond that either port the std headers to the gasket witness marks or a good set of gt spec whether that is RCM, Fuji, Lateral etc.. They are all effectively the same 👍

@madmuffin12345

10 ай бұрын

@@racedynamix I’m not sure what you mean be std?

@racedynamix

10 ай бұрын

@@madmuffin12345 when and if your headers need replacing depends on what power you are trying to get to. 👍

@madmuffin12345

10 ай бұрын

@@racedynamix the end goal is to get it around 400bhp, however I have very limited knowledge on what needs to be done to achieve this. Regarding engine work and supporting modifications such as fuel and cooling system as well as the oil system. I would be interested in getting the car on the Dyno as it stands now so someone could look through the data and see if there is any under lying issues I recall you mentioning a service you provided however I can’t remember where I saw it. So yeah 400 is the goal

Red sure fire coils..I took that bait ☹️ one failed after a 3 days..!! I wonder how many people with Toyo headers fitted see this video and 😢

@racedynamix

10 ай бұрын

They will already be crying Steve. Hopefully they will understand why now 😁

I don't see a problem with short shifter if you don't go crazy and slamming into gears

@racedynamix

10 ай бұрын

Exactly 👍

Hi mate, you talked about blanking the bpv off completely, do you think thats bad for the engine or turbo?

@racedynamix

4 ай бұрын

Not bad for engine but can be a little worse for the turbo.. But all good things are bad for the turbo in lots of ways. If it is a td04 then they are cheap as chips anyway, the bigger and better turbos are fine with it in the whole 👍

@johnorr2241

4 ай бұрын

@@racedynamix stock turbo 03 blobeye

@racedynamix

4 ай бұрын

@@johnorr2241 tbh, the sound effects from blanking it off may not be worth it.. You may think they are though 👍

@johnorr2241

4 ай бұрын

@racedynamix no im listening mate lol. Just bought a bov but might not put it on now

@johnorr2241

4 ай бұрын

@racedynamix hi again mate, im getting my car tuned and a reputable tuner here(Australia) said with a 3in tbe he could only get me about 30kw atw more than stock, ( so around 140kw ((187hp)) assuming its 110kw stock) but didn't you say a blobeye will get 290 hp with a tbe and panel filter? Im confused as to why he cant get more, is it potentially unsafe for my engine or am i missing something? Thanks in advance

Hey Duncan, is it better to go high quality blow off valve or delete?

@racedynamix

10 ай бұрын

Hi. A delete is free tbh (easy to rig up a blanking plate) .. So I would try that first to see whether you like it 👍

@PedroFTeixeira

10 ай бұрын

@@racedynamixWould you delete it on a standard car still with a MAF sensor? Probably would need a remap after that, no?

@racedynamix

10 ай бұрын

@@PedroFTeixeira the dump valve is blocked off when on boost anyway.. Blanking it off doesn't change that. Remap is always a good idea though if it hasn't been Tuned before 👍

@BlueMica63

10 ай бұрын

@@racedynamix I heard it's not good on the turbo or is it negligible? Thanks for the reply Dunca :)

@racedynamix

10 ай бұрын

@@BlueMica63 all the good stuff is bad for the car or turbo in some way. Negligible impact in my experience

I have been having an issue with my stock shifter after I had the diff service done at the dealer now it grinds when I shift into 4th

@racedynamix

Ай бұрын

Which diff did they service ?

@bloodpoolxtc702

Ай бұрын

@@racedynamix front and rear differential service

@racedynamix

Ай бұрын

@@bloodpoolxtc702 I would suggest taking it back to them, either the oil is wrong or not enough in there.

F the cylinder 4 cooling mod. All it does is normalise cylinder temps across the board, yes c4 is slightly lower but the rest are alot higher. Where is the knock sensor again?

@racedynamix

10 ай бұрын

Great point 👍

Hi, I've got my dumpvalve blanked atm. I've been thinking to get a gfb recirculating dumpvalve fitted before mapping. Do you think its worth doing or pointless?

@racedynamix

10 ай бұрын

How's it running with it blanked? What turbo btw?

@Ilyas-hu8jy

10 ай бұрын

@@racedynamix thinking the blanking bung kit and v22 hybrid

@racedynamix

10 ай бұрын

@@Ilyas-hu8jy is it on the std ecu running with a maf sensor?

@Ilyas-hu8jy

10 ай бұрын

@racedynamix yes standard orange maf and its on apexi fc atm but will be going with the link g4x next

@racedynamix

10 ай бұрын

@@Ilyas-hu8jy with the Apexi I think I would run the dump valve because the maf is fragile. But when you go link my thoughts would be to blank it off 👍

I have a set of Tomei headers that do a similar 4 into 1 merge, but its after the turns and appears to be a smoother transition than the Chinese ones you showed. Wish I got the tomei ones sooner, I made 590bhp on 30psi with a very heavily built motor and Garrett gtx3076r, and similar headers to the ones you showed here. Might have made 600 if I knew better sooner!

@racedynamix

10 ай бұрын

The Tomei ones are nice 😎

@ADDGC8

10 ай бұрын

@@racedynamix thank you for replying! And I'm thoroughly glad you approve 👌

the best mod you can do is stay STOCK ;)

@racedynamix

10 ай бұрын

I prefer 'almost' stock .. But yeah, the std cars are fabulous 👌

@01hafkee

10 ай бұрын

At least in the states the stock tune is garbage. For that very reason at least a pro tune is needed. Additionally an AOS to protect against the detonation-causing oily blowby turbo motors produce.

I wish you done this vid 10 years ago I wouldn’t have wasted all that money 😂

@racedynamix

10 ай бұрын

Same.. I wished I had watched this 23 yrs ago when I got my first scooby.. I would be much richer too 🤣

@PeterHernandez-lg2eh

10 ай бұрын

70 retired 2006 Subaru sti with spt add ons. Nothing else

Wizard Sleeve 😂

@racedynamix

9 ай бұрын

😂😂

And here I am with a kartboy short shifter. Now I’m hoping i never have trans issues

@racedynamix

3 ай бұрын

😁😉