E85 instead of 93


Cat&wife post starter
Car exhaust smell is pretty bad. Looking to see if E85 is more exhaust friendly. Would putting one tank full of E85 in my 93 chipped GN do any harm?
I wouldn't go into more than 2-3psi boost


Well-Known Member
It would if the chip wasn't burned for E85... I do know first hand do not use gas with a car set-up for E85... EVEN FOR A FEW MIN... It will wash down the cyl's with pure gas.


The Engine Whisperer
At most a couple gallons of E85 blended into a full tank with 93.
If the car is too smelly rich you should be able to tune it run a bit leaner?


Cat&wife post starter
I know my engine is tired. I put a Magnaflow 200 cell hi flow cat on it and it really didn't help. I'll change out the O2 anyway. BLM's, and all other Scanmaster #'s, are good.


Active Member
You will need to use the adjustment features in the TT chip to compensate for adding e85. I used to run a 50/50 mix of e85 and 93, by adding +15% more fuel at WOT to my TT chip that was burned for 93 octane. Switching to strait e85 will likely require more fuel than the chip can add. The 36lb injectors might be a bit small as well.


Believe nothing you hear and half of what you see.
I was at the track one time and a car had a vanilla smell exhaust. It was weird but not too strong.