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  1. X3 F25 (2011 - 2017)
    Hello- I am in a quest for more power in the x3 looking for insight from anyone that has really bumped up the boost. I am going back and fourth between the ESS tune and the regular jb1. I am super bummed the JB4 doesn't work on the f25 n55. I would like to get to 400whp. I was all set to do down...
  2. F10 / F11 (2011 - 2016)
    So I've read most of the various posts on here about the BMS JB1 stage 1 tune for the N63. I had a few questions, just to make sure I understand what I'm getting into: This almost seems too good to be true when compared to Dinan's $3k option. Any major downsides? The harness looks...
  3. General BMW Questions
    Hi i have yet to recieved my BMW 135i as it is still awaiting transport in Germany. I have already purchased a Split Second Tubo Tuner that i defienatly want to put on. I saw an auction on ebay for the JuiceBox 1 for a really good price, so i bought that as well. I was wondering if i could...
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