stock turbo evo 8/9 does pretty good with e85 because there is room to push the turbo a little harder over what can be done on gasoloine. i think there is less headroom in the evo 10 turbo.

 

I assume you're speaking beyond 5500rpm, in which case I agree.

Also it should be noted we experienced some issue with the wastegate... odd oscillations that seemed like it was not really in control 100% of the time. that, coupled with a higher-than normal WGDC led us to the conclusion that my wastegate may not be up to the job. I'm going to attempt to put a bit more preload on the arm, but if that fails may considered moving to an upgraded unit like the FP one.

 

Your car must've been down there when mine was. Nice number for just switching to E85 with a tune.

 

Nice torque numbers. My buddy made a tad more horsepower, tuned on the Mustang Dyno at KHC in Jew Jersey. He's close to stock also.

 

thanks. yeah I think I saw your car... black with a big wing and a front license plate?

nice. does he have a thread here as well I could reference?

as I mentioned before, I seemed to have some issues with the wastegate. also I believe I found out this morning that my clutch is beginning to slip?

 

I dont believe so. You can pm him and ask...DEK0026 (?)

 

Yeah, that would be my car. When I picked mine up it was the only black one there so more then likely.

 

yo derek just wanted to fill you in finally got tuned made 331/367! ahahah

 

I wish there more E85 stations around. The closest is 20 minutes out of the way. And I live in the middle of a huge city!
Good combo op.

 

Was the before number a self tuned E-85 dyno or was that a pump gas map? If it was self tuned do you know what was changed to pickup all that torque?

Good looking numbers, I should hopefully have some in the next couple weeks with similar mods

 

Nope, won't happen. If the turbo has no more air then making it easier to push through that air won't create any more power. At best he'd make the same numbers at a lower psi and be out some cash.

 

I agree with the above, the smaller cold side of the Evo X turbo is holding it back up top.

 

ya, definitely agree with the above comment... I'm running 33 psi on E85 and dropping down to 18 at red line. Its so nuts how much tq there is, but I sure could use more HP up top, it pulls really hard from a dig then it just doesn't seem the same after that lol.

 

Mitsu messed up using a turbo with a smaller cold side than the one on the Evo 9. As can be seen from the dyno chart, there is not top end improvement. The stock turbo runs out of steam at ~19 psi. There is no point pushing it beyond that point. All the gains are in the low end and mid range. By contrast, a stock turboed Evo 9 with all the bolt-ons gains power across the entire rpm range.

Thanks for posting this. It re-enforces my decision not to run the stock turbo above 18-19 psi at the top end on Evo Xs that I have tuned.