Originally Posted by leonevox

before i switch to tephra v7 ecu flash, my car have 2 code check engine light with e85 tune, 1 is the po171 , the other is some sensor in the intake, i forgot . After tephra v7 no more check engine light, thanks tephra. But my cel some time flash when i floor the gas, i guess it's showing knock . I thought e85 doesnt knock at all. But before tephra v7 mods, my car actually run a lot better, really smooth throttle, and i doubt any knock. I got my car tuned 5 times with 4 different tuners already. The best time when my car run is without a tephra v7 mods. Not trying to put tepra mods down, but my car run real bad with tephra v7 mods. I blew up my motor because of 44psi that i stupidly forgot to turn the boost down, but before this my car run suck, maybe because of the bad tune.

Originally Posted by GST Motorsports

A. Wrong posting in wrong section in wrong thread

B. No car "run suck" because of TephraMods but it can "run suck" because of whoever was behind the keyboard at the time of tuning.

- bryan