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      03-28-2013, 11:00 PM   #5
Private First Class

Drives: Space gray 335i coupe
Join Date: Feb 2012
Location: Greenwood, SC

iTrader: (0)

From what I understand it tricks your tmap sensor into thinking it is at a higher elevation thus requiring more boost to achive the same load. So yea... basically it just raises the boost. For the record I loved my jb+. It really is more than a "modest" boost in power. On most platforms you would spend thousands getting the same boost in power as a $120 (used) jb+ can give you. Will you want more... probably.. will it satify you for the time being and if you are not looking for 400whp.. I say yes.. will it put a big smile on your face... defi Honestly I think I is quicker (at 75%) than cobb stg 1 drive and comparable to stg 1 aggressive. (I am running cobb now with a custom e30 map and have experience with both). Let me know if you are looking for one. Mine has been sitting in my glove compartment for 6mnths. Lol.
Space Gray 6mt e92, coral red,Cobb tuned, custom e30 map, bms DCI, ETS FMIC, walbro 455 lpfp.