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Originally Posted by TFX_N20
I have a 2015 320i. I'm currently running JB4 Stage 2 Map 5. I'm using a 60/40 mixture of 91/E85. Compared to 100% 91, it's a night and day difference between power and throttle response. Current mods are: Injen intake, ER catless downpipes, and Borla catback exhaust. Still debating on making the jump to map 2. If I recall right, it's not recommended to go above a 40% E85 mix.
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TFX-Any video/audio clips of your car? Curious on DP and Borla. I've been enjoying Map5 and the e85 mixture, quite peppy says the butt Dyno!