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Ok I have a question if im planning on running just E85 as my primary and only fuel that ill be driving my car on can I just start tuning it like that or I have to tune it first on 91 pump gas first even if i plan on running just E85?
You can definitely just tune for e85, though even if it's just a map switch I'd always recommend having the ability to run both e85 and pump fuel to 'pickle' your fuel system if you're not going to drive the car for a period of time.
Ok thanks because on here and everywhere I look it just talked about blinding from a 91 map first but thanks and if im running just E85 do i leve my AFR at 14:7 or do I chang it to 9:8?
No idea what ECU you're running but I'd be targeting lambda - cruise can probably be parked at the same 1 lambda, you'll more than likely find that under load you'll want more than whatever you've been targeting before.
