FOR SALE: I'm selling my 335; so... my loss is your gain! For Sale: Used Excellent Condition JB4 PNP (N54 Stage 3) plus BMS USB Cable and Dual Cone Intake Combo. Regularly $649. Buy this one for only $499!
If you're on this site you already know that the 'Juice Box' JB4 adds a HUNDRED HP (100 HP) and about 100 ft-lbs to your n54 motor! I've got to tell you, the added power is intoxicating! For more info see http://burgertuning.com/jb4_pnp_BMW_...nce_tuner.html
with questions, or to buy.