I just saw Hartge released a tune for the F10 N55 and I was like "holy sh*t !". Hartge used to make me dream in my childhood by putting M5 engines in M3...
I looked a little and I saw they also made tunes for the 135i N55. How come was I unaware of this? I probably wouldn't mind paying the extra $$ just from their reputation.
Anyways I looked up on the internet but I couldn't find a review, a user dyno, etc... Nor could I find anywhere to buy this !
I'd probably need to contact them directly, but before I do that I'd like to know if any of you guys tried their tune and could post feedback !