Quote:
Originally Posted by BeamerandBimmer
Congrats. Give BMS a shout they have a stage1 that takes 10 minutes to install. I installed mine a few weeks ago and it was very simple and easy to install. Taking it and my 135 to MIR on Sunday.
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Yeah, I had a JB4 from day 1 (ok, day 5) in my 335i. Terry's tune is similar to the JB+ for N54/N55 in that it just fools the TPMS sensor to get a couple more pounds of boost. I've been lobbying him to do a full JB4 for the N63 but I guess the demand just isn't there despite it being in many models.
Anyway, going to pick one up at the end of the month and put it in. I'll do some back to back GTech runs since nobody has really documented the performance gains on an X5.