Help getting stated with a e85 tune
Thread Starter
Instructor
Joined: Sep 2013
Posts: 188
Likes: 80
From: little rock Ark
Help getting stated with a e85 tune
Hi guys i need some help getting started tuning with e85 all the hard stuff is done lines injectors etc. What changes need to be made in the tune to get it start, idle,and drive down the road. Its a SD 2000 turbo corvette. need to be able to drive safely to a shop to have it tuned on there dyno.
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
do you have hptuners?... it might be best to have them write you a new file and then you can rewrite it yourself and drive to the shop... they shouldn't charge you any more than what you are paying for the tune to do that
Thread Starter
Instructor
Joined: Sep 2013
Posts: 188
Likes: 80
From: little rock Ark
I do have HP Tuners Im a Ok tuner with gas But this is my first E85 try just looking for some tips to get me up and running on corn gas.
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
from what I remember my tuner basically doubled the fuel tables to start out with... I drove it around for a couple of weeks like that (obviously staying out of boost) to get any leftover pump gas out of it (since I am running e85 only and not flex fuel) and then took it to him to finish it up... I always check the mixture of what I put in the tank and I have an e% gauge in the car as well, since I am e85 only if the content swings in either direction the afr will also change... I have heard that at most it may be half a point rich or lean depending on the swing from what you are tuned for and since the octane of ethanol is so high people usually don't have any problems with knock unless their tune is on the edge but I check it anyway because it is a simple test, with pump gas you never really know what you're getting until you have problems
Last edited by StingrayRebel; Nov 19, 2017 at 02:31 PM.
Safety Car
Joined: Aug 2011
Posts: 4,449
Likes: 409
From: Portland OR
No, just change the Stoichometry under Fuel/General.
Set it to 9.78
ALL of the fueling calculations are based on this.
I've tuned quite a few of these. It works fine.
Might need some fine tuning here and there.
BTW, all the Corn cars I tune are turbocharged.
Ron
Set it to 9.78
ALL of the fueling calculations are based on this.
I've tuned quite a few of these. It works fine.
Might need some fine tuning here and there.
BTW, all the Corn cars I tune are turbocharged.
Ron
Last edited by RonSSNova; Nov 19, 2017 at 04:11 PM.
Thread Starter
Instructor
Joined: Sep 2013
Posts: 188
Likes: 80
From: little rock Ark
