So are you having the car tuned for E70 for safety or are you going to buy a test kit to make sure the E85 is what it is supposed to be? Just wondering, seems like most guys around here are not running pump e85 they either buy e85/98 by the 55 gallon drum or run a e70 tune.
You have the car tuned with e85 the first time NOT e70 as if you tuned it for e70 and it got e85 in it. The motor would end up in Kaboom land The more ethanlol the more fuel needed. If you tune for e85 and you get some e70 no big deal it just gets a little richer. I have never tested e85 from the pump and ran it with 30lbs of boost and fuel timing with no ill effects. I have 4 different cars that make over 25lbs of boost i do this with on a reg basis. The test kit is a very good idea but i have never used one. My tuner can smell the fuel and tell you the ethonal content and that is NO JOKE< He's Tuned over 2000 e85 vehicles now in the last 5 years.