2011 gt500 e85 tuning issues

[bstperformance]

ok long story short changed my stoich aft to 9.6 and still trys to compensate to 14.7..anything I miss?

[Higgs Boson]

post tune

[bstperformance]

im new at this forum how do I copy my tune to here?

[bstperformance]

this is sorry for taking so long

[Jn2]

Have you tried enabling the flex fuel logic and filling in the appropriate flex fuel tables, so set your stoich to 14.08(assuming your're in the US that's stoich for e10). Then set stoich minimum to 9.6, and stoich maximum to 14.7. You will also want to adjust the other flex fuel tables found under "open and closed loop". From here the car will auto adjust its stoich value based on E%.

[bstperformance]

yeah I did try but I didn't spend enough time on it im sure...ill try it again tomorrow

[jchambers]

What makes you think its compensating to 14.7 if you set your stoich value to 9.6?

[bstperformance]

ive got a wideband hooked up to it and its not running right....

[Jn2]

Can you set your wideband to read out in Lambda? Makes it a lot easier to tune since the ECM works off lambda as well.

[jchambers]

Can you set your wideband to read out in Lambda? Makes it a lot easier to tune since the ECM works off lambda as well.

Exactly. If you're trying to use a WB calibrated for fuel (and likely not even calibrated at the correct fuel stoich), then its still going to read 14.6-ish even though you're running E85 with a stoich of 9.7-ish. That's because its converting the lambda reading to an AFR based on some preprogrammed stoich value. Switch to lambda and tune in lambda.....always.