besides a tune, don't u also need a new fuel pump to even handling the e85?
I know a lot of people with n54 had to upgrade that to do the e85 mixture tune.
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2013 AW/Coral Red 328i Sportline- Mperf. Black Grills, Mperf. exhaust, Prem. pkg, Tech pkg, Lighting pkg, Heated seats, Sports 8spd w/paddles
2016 CWP STi FBO E85
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