these are great videos. you really do great work man

Mr. Evans you are the man, yeah I wish you were here in Missouri to. Your a genius and great at everything you do.

@paintballjunkie65

7 жыл бұрын

JARED BORJA you can go on his website and request him to come to your area. If enough people request then he will.

great work as always..!! keep the vids coming..!

The injectors can't handle that power level I think is the issue more than anything. My LME 370 CID needed 1000cc at the 840whp range and 750s we're over 100% duty cycle trying to keep up. The LSX needs a bigger drink! I'm speaking pump E10 by the way, on E85 I would 1300-1500cc injectors.

Keep the videos coming bro

Dope vids

Nice work keep the vids comeig

i usually see 650 max on 60lb injector so its probably just dunzo, i know some people say they can do 700 + but i think they have a happy dyno and they are not feeding a blower BSFC

@Rebel635csi

7 жыл бұрын

Matt hes also supplementing some fuel up top with meth....and perhaps the lack of tire on roller drag is accounting for higher numbers?

@EvansTuning

7 жыл бұрын

The car was previously putting down 660~680 whp, but had major belt slip issues. The IDC was around low 77-78% at that point, but the car is spraying meth and spraying a lot of it.

This one was pretty tricky. Glad yall narrowed it down.

I love the videos 👌🏻 I always learn from your videos and appreciate you taking the time to make them.... I'm sure you're aware but I got a cool little trick from Matt happel when it comes to fuel pressure. He bought a 0-100psi 0-5v transducer and configured it into one of the hp tuners inputs. It's awesome for logging fuel pressure and gives a nice standalone style feature when using the stock gm computer. Makes it very simple to diagnose fp issues. I'm very surprised at those figures on 650's!!!! Those have to be maxed out. He should also ditch those fuel pumps, put in dual 450's and call it a day. It's nice to have a fuel system you're confident in when trying to push the car.

@EvansTuning

7 жыл бұрын

We added a fuel pressure sensor later, found the pressure dropping off a lot up top (into the 40s). Unfortunately I had to work with what the customer had brought in. I would have certainly liked to have ID 1000cc's and dual pumps with a returnless fuel system installed.

@dj4monie

7 жыл бұрын

Exactly I can never understand why people cheap out on fuel upgrades. It's likely because it's not considered a power adder. But if you can't pump more fuel then power you want won't be possible. With dual 450's, he could go up to 1,2000 ID's and run E85, easily another 70+ hp....

i swear you spend more time fixing/troubleshooting peoples cars. Love the channel!

Does it have a Hotwire kit on the primary pump? Racetronix has a good kit to replace the stock pump with a 255lph and the Hotwire kit is made so the boost a pump is plug and play. Some guys start to run into issues with stock rails over 700 also. The UPP kit should have a fuel pressure gauge on the regulator and it uses a 400lph pump, so that should easily power the system.

Looks like you already figured it out. My small amount of input was going to mention the fuel filter. Recall a buddy doing a 5.3 swap return-less fuel system he had to use a corvette fuel filter since it had a regulator built in. In my mind I was visualizing both pumps being prior to the filter/regulator causing the pressure to be regulated to the stock 60 (ish?) psi regardless of what it was being fed.

@Rebel635csi

7 жыл бұрын

The corvette fuel filter is also not boost referenced...it will not raise fuel pressure to counteract the raised pressure in the manifold the injectors would be fighting.

@shawneeboy7750

7 жыл бұрын

Rebel635csi so my thinking was on right track then? I have no real experience with boost or ls engines. Lol.

@Rebel635csi

7 жыл бұрын

Pretty much. Without a way to raise the fuel pressure to counteract the intake boost pressure you're effectively flowing the injectors a lot less than they are capable at the time you need them the most. You can still run a boost reference regulator on corvettes...just put the aftermarket fuel pressure regulator in place of the corvette fuel filter then run a fuel filter after the regulator or before the regulator on the feed line.

Why do you tune the car with no steering wheel and no wheels? Is there a reason? Or is it because its on a Dynopack dyno? Never seen anything like this just curious.

If I need a tune in the future, this is where I will go. What was the injector duty cycle?

@EvansTuning

7 жыл бұрын

Was hitting 100% before redline, which was caused from fuel pressure drastically dropping off.

@evodan5623

6 жыл бұрын

IDC has nothing to do with fuel pressure. It’s a mathematical equation that’s shows how much relative time the injector is open before the next intake valve opening event. 100% injector duty cycle means they’re all just hanging open.

hahaha i heard a vr6 12v in the background @12:11

i would love to see how you tune water methanol injection

Jeff, Is there a plan to do another Q&A video? More of a technical one perhaps

@EvansTuning

7 жыл бұрын

+Steven Sayalath More tech videos will be coming. This time of year has so much tuning happening that the 'tech' videos don't happen nearly as often.

Hi, Love your vids. Hope to meet you at WCF. Do you check for boost leaks and set up your failsafe thresholds before tuning?

@EvansTuning

7 жыл бұрын

If the standalone we are using has fail safes, then yes they are configured before tuning starts. Boost leak checks are done on most all MAF based cars, or if there is a suspected boost leak while tuning.

@turbosupra2jzdragracingtob249

7 жыл бұрын

Evans Tuning Thanks. Sounds good. Wishing you the best. Keep the vids coming.

Have you done the Cadillac ATS 2.0t ?

Did you ever figure out the issues on this car?

👍👍👍

You are a Rockstar Tech. What kind of RPMs on max for this car?

@AndyDittmar1

6 жыл бұрын

saint kevin usually only around 6500rpm

May I ask what pulley?

no duty cycle loging in hp tuners?

@EvansTuning

7 жыл бұрын

Yes, the injectors were going static at 100% super early. I know it had to be fuel pressure related, and confirmed it was dropping substantially later on while monitoring fuel pressure.

@moshegalimidi2302

7 жыл бұрын

so how much are 650's good for? are you using the big nozzle? thanks for the reply!

I wish you were in Florida I really need a good tuner, do you or anyone know where I can find a good tuner in Florida who does good with k series and hondata?

@stevardm2694

7 жыл бұрын

u ever heard of instagram.com/derf.tuned/ ?

@akamatt71

7 жыл бұрын

^what he said derf tuned

@Slavikhavoc

7 жыл бұрын

akamatt71 I need one in the central Florida area sorry I wasn't specific.

@JimmytheGenius

7 жыл бұрын

Dynamic Tuning LHTPerformance

@akamatt71

7 жыл бұрын

check out his insta. he was talking about going to florida in august.