Elite Tuned School Explains SOI for Gen 5 E85 Setups

[@jasonwillen4468]

Do you believe the elite tuning school is worth the price? I'm trying to find a good source for ford ecoboost engines and I'm considering there course.

[@notbuyingit8047]

So when he says you’re gonna smoke the fuel system, how do you know you’re in danger of doing that? Rail pressure? Duty cycle over 35%? What fails in a smoked fuel system? My LT1 HPFP gave up the ghost with 20k miles on a dyno tuned (reputable shop that don’t want to take the time to fine tune the midrange torque tables). ECS kit at 8lbs of boost. Made 580 hp 525 tq. Now I have an LT4 hPFP and made 588hp/568tq.

[@Calvotuned]

Interesting, however I thought from Greg Banish Gen V training (and matches my understanding of physics of it) that going on SOI higher than the end of valve closing for exhaust valve event, typically above 359deg it’s just gonna bypass fuel off to the exhaust. So that said he lost me when he mentioned 400 something on SOI. That makes me fear that AFRs might not be true “in cylinder burn” AFRs when SOI goes beyond 359. Just IMO.

[@GoatRopeGarage]

From my own personal experience Greg is wrong, not only on this, but a lot of what he “teaches”. I can personally attest to running SOI higher than 359 degrees to extend the DI fueling on a DI/PI injection combo with over 25lbs of boost without any exhaust activity, which if what he was saying was true you would be getting pops on decel after a WoT pull. You can make over 1000hp without having to dump fuel into exhaust. And based on the cam you can push SOI past 359 on even the mildest cam in a L83.

[@Calvotuned]

Interesting, will keep this in mind if I struggle with fuel delivery. Was always shy of going beyond 360 due to this process, but I’ve always seen gains when advancing SOI within reason. Experience beats theory anyway

[@1badss2000]

I’ll touch on this, the referenced video was a cam car so some of that was out of context, while some of that theory may sound great, having spent a lot of time and having tuned about 1000 gen 5 combos ranging from stock cams to 1500+ wheel gen 5s, a stock cam car can be pushed passed your reference number without adverse affects from the Dyno graph itself, when you start to inject fuel at an open exhaust valve you will see power output decline as well. Cam cars will actually pick up power from advancing soi past your reference point in conjunction with extending the fuel system further. Truthfully if you stop at 360, you will have a lot of drained fuel systems and unhappy customers out there with how far people are trying to push these platforms these days. The objective is never to run as much as possible either, only to keep the high side pump from being drained while keeping control of the fueling, so it’s always a balancing act when you really start pushing these fuel systems which a lot of oe guys have not had the pleasure of having to do on a daily basis.

[@dsmubz]

​@@1badss2000 mine is a stage 2 btr cam c7 z06 with a low side, I'm going to test this on my dyno, I was a little worried about the car going above 400 SOI.

[@1badss2000]

@@dsmubz 400 is definitely getting up there, especially if it’s on gasoline as they will tend to black smoke a bit at that level. Ethanol it’s not as much of an issue, I like to keep cam cars under 390 if possible on gas, I’ll stretch ethanol to the 400-415 but that’s about all they have, past that you are going to start to loose control of the fuel

[@craigsigafoos280]

Very informative