Thread: e85 swap questions

Being that E85 was never in my car modding future i can say that this has to be the best engine mod for this car pound for pound! Im currently on a stock pump but upgrading to a aem pump this week because of my pulley swap and i'll drop from a 3.0 to a 2.8 by that time i saw 5* of knock on my Cammed/ Heads /Header/ Genv /3.0 Pulley setup driving the car now i have no knock!

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Originally Posted by jayroca

Being that E85 was never in my car modding future i can say that this has to be the best engine mod for this car pound for pound! Im currently on a stock pump but upgrading to a aem pump this week because of my pulley swap and i'll drop from a 3.0 to a 2.8 by that time i saw 5* of knock on my Cammed/ Heads /Header/ Genv /3.0 Pulley setup driving the car now i have no knock!

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Let me guess...... Runs a hell of a lot better now that it ever did with a (worthless) intercooler too huh!?

Originally Posted by 98ChainStretcher

Let me guess...... Runs a hell of a lot better now that it ever did with a (worthless) intercooler too huh!?

It wasnt worthless lol but i would say its a better mod along with reptiles tune lol

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I think with e85 some sway bars and braces, and that car should be a different beast.
with the e85 and 42# injectors does the maf and o2 sensor still compensate for lean and rich conditions?
I understand how e85 raises power and lowers spark knock, but i just want to make sure its definitely ok to run without a tune.
I guess it was pounded into my head that any major change requires tune.
If it runs like normal (not rich or lean) then it will definitely be one of my first mods. How small of a pulley can i run on a stock car with the 42# E85 SETUP

Originally Posted by adecker

If you use 42.5# injectors you dont need a tune as they are 30% larger and e85 requires around a 30% adjustment. Any other injector type you will need a tune for e85. If its possible I still recommend getting an in car tune from a local tuner

what sort of pulley should i be able to run?
Theres a local place that will do initial dyno tune for 500, and subsequent tunes for 100$ probably hit them up when i go turbo.

Originally Posted by SnowTh1ef

Which ever one doesn't KR.

guess ill start with a 3.4 and move down if it doesnt kr

Originally Posted by BrandonHall10

Okay, back on topic for a second...

Assuming someone does the 42.5 injectors because they can't tune, is there any advantage to doing a hard reset on the PCM once the e85 is in the system? Or just drain tank, swap injectors, fill with corn gas and go?

Good question.

The answer is not really... you mostly just want to take it easy and roll into about 40% throttle a bunch of times before you get carried away with hard core racing.