EQT E-Tuning Q&A

[Ed @ EQT]

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[flipflp]

After a lot of lurking in EQT threads I finally pulled the trigger. Could have something to do with 91 octane being $4.60 a gallon and E85 being $2.60, and Ed coming up with a full E85 tune. A sale doesn't hurt either!

I know this sounds like a question that should have been asked before purchase, but is there any concern on a full E85 tune that the LPFP would need to be upgraded? Up until this tune full E85 on our platform meant a lot more fueling upgrades so if it's something that 1 in 10 cars needs because of various things I wouldn't be surprised.

 

[Dubstro]

After a lot of lurking in EQT threads I finally pulled the trigger. Could have something to do with 91 octane being $4.60 a gallon and E85 being $2.60, and Ed coming up with a full E85 tune. A sale doesn't hurt either!

I know this sounds like a question that should have been asked before purchase, but is there any concern on a full E85 tune that the LPFP would need to be upgraded? Up until this tune full E85 on our platform meant a lot more fueling upgrades so if it's something that 1 in 10 cars needs because of various things I wouldn't be surprised.

I just purchased the E85 OTS too for my R and looking forward to testing it out. My buddy is already running this file on his S3 and said his car has never felt better in TX weather. FWIW, his rail pressure looked good in his log though he didn't go WOT the entire run, lol.

 

[scrllock]

I know this sounds like a question that should have been asked before purchase, but is there any concern on a full E85 tune that the LPFP would need to be upgraded? Up until this tune full E85 on our platform meant a lot more fueling upgrades so if it's something that 1 in 10 cars needs because of various things I wouldn't be surprised.

No, their staged e85 tunes are conservative enough to only require an HPFP upgrade. It's possible that you could squeeze more power out of the stock turbo on a custom tune with an upgraded LPFP though.

Anyone know how long their backlog on custom tunes is these days? Last I talked to Ed he seemed pretty swamped doing dyno appointments while Nick handled the e-tuning.

 

[flipflp]

Thanks y'all. I thought I had read up on it enough but I also know that some cars are different than others, and I didn't know how ragged edge a full E85 tune was going to be. Especially considering just a year ago full E85 was a no go without MPI and LPFP. Seems like a free lunch, but I don't think EQT is the company to over promise and under deliver. SUPER excited to get flashed.

 

[scrllock]

No free lunches, it's probably definitely just an e60 tune with enough room in the fuel trims/boost to manage full e85. Would keep things safer for people with really bad pump ethanol mixes too.

 

[Diggs24]

Not seeing this being remotely possible. IS20? Sure. IS38? No way. Maybe if you tapered it like an IS20.

 

[Dubstro]

EQT has stated that the E85 OTS produces about the same power as the E30 OTS. They are saying the benefits of this option is helping with knock and eliminate need to blend with pump gas. My unsophisticated understanding is some things are dialed back to allow for more E content?

 

[flipflp]

Not seeing this being remotely possible. IS20? Sure. IS38? No way. Maybe if you tapered it like an IS20.

I'm interested in the result of this wizardry. It sure seems too good to be true, I just want to pump a full tank of something and go.

I am going to log/monitor the full E85 tune, should I be looking at more than just rail pressure?

 

[Diggs24]

Well you can't see LPFP pressure. The standard EQT parameters are plenty.

 

[scrllock]

I'm curious how much boost they're pushing on the top-end of that. But without MPI, you don't have a low pressure sensor.

 

[ZuMBLe]

Not seeing this being remotely possible. IS20? Sure. IS38? No way. Maybe if you tapered it like an IS20.

Probably just less boost and more timing. Joe and I were discussing a full E85 tune for his future daily. Seems like it would be pretty easy to do. You don't run a MPI E85 fuel targets or boost targets.

 

[Dubstro]

Not my car. My friend's 2018 S3 on EQT E85 OTS with the autotech upgrade. Looks like boost peaks at 27 psi to around 5500 rpm and tapers to 21ish up top. Timing tops out at 16.5 deg. His best dragy run was 11.8 @117 full weight.

https://datazap.me/u/fchantham/log-1622800540?log=0&data=17-40-45-47-48&solo=45

 

[flipflp]

That looks pretty solid. Sub 12 second 1/4 mile is moving too.

 

[daconchslop]

What’s the deets on the new turbo??