I have switched to E-85 and I have an Evo 8 with Evo 9 turbo and many bolt ons including HKS 272 cams and ARP headstuds. What kind of boost are you guys running on E-85 with stock turbos? I am at 27spike and about 21-22 holding till redline. I was told I could go a little higher and not hurt anything but I wanted to make sure and I also dont want to waste my time blowing hot air.

 

...28 psi tapering to 22...

 

30psi to 23-24, might even be able to peak higher

 

29.5 psi to 23-24

 

28psi tapering to 22psi....

On the dyno i cranked it up to 30psi, but it didn't affect power levels much. So i guess 30psi is just blowing a bunch of hot hair

 

I only went up to 28 on the dyno. however for daily driving i keep it at 24. Since this is still pretty new to the evos, i plan on driving at no higher than 24. When im racing (rallyx) it gets turned down to 18.

 

I've ran on road course tracks at 25psi on E85 and car runs fine during the 20 minute sessions

 

32 Map

-e

 

Do any of you tracking your EVO have an EGT gage? What are you seeing compared to EGT's on the same track/event on 91/93?

E85 is supposed to burn/run cooler, but if the boost is turned up on E85 that may off-set any "improvement".

 

I have an EGT gauge and mine is about 25-50 Celcius cooler peak temps compared to 91 octane at 25psi. At 28PSI, EGT's are about the same as 91.

 

I have installed 850cc injectors along with pump, and will be tuning for E on monday, however I will keep boost around 25 psi for daily driving. 27.5 max for the track.

 

Does anyone have one of those E85 Content gauges that are being sold somewhere in the forums. I believe its based off the GM sensors and detects the percentage of E85 that you get from the pump. I would think this would help so that you could fine tune for what ever % e85 you get...

 

30+psi spike.. stock turbo, stock ecu..

 

23.6 tapering to 20 by redline.

 

Mike...I was hoping you would post! I think ill go with his setup at 30psi b/c this guy knows his ****.

For those who disagree look up a Evo with a guy named CWill!