So.....I've read a bunch on tuning the N20 in my X1. I'm about to pull the trigger on the BMS Stage 1 tune, but want to get opinions on if perhaps there is a better tune to get for the money. I may also go for stage 2 when it is available, but won't go any further than that, as I need reliability since this is my daily driver.
Anyone here post 0-60 or 1/4 mile improvements in their X1 28i? If there is something like a half second improvement as the posts about the 328i suggest, I'll be pretty happy.
Thanks!
Sean
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