Quote:
Originally Posted by shayan30
I'm curious to know the difference between this box vs Vivid racing which claims an increase of 147hp but it's double the price.
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You have TDI,Manhart,JB4,Vivid.......not much real info out except for JB4 and it's not good info. 15:1 AFR, throttle closure, etc, etc is not a good sign that the new M5 will be piggy compatible. I've been waiting on RaceChip, but I hope no news isn't bad news.....