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      09-13-2011, 10:01 PM   #62
shashi27
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Drives: 11 Z4 35is
Join Date: Jan 2011
Location: NJ, USA

iTrader: (0)

Pulled the trigger, mine is in the mail. I had a JB4 on her so it will be nice to see how the ESS compares. I have nothing but good things to say about the JB4 as it changed the car from fast to a beast. My car threw some strange codes with the JB4 on but not with it off, though Terry thought it might be a bad HPFP; 29F1 Fuel pressure, plausibility, 29F4 Catalytic converter conversion, 29F5 Catalytic converter conversion 2, 2FBE Fuel pressure after motor stop. Will have BMW look her over before I flash the car for good measure. Maybe the code are only being thrown as a result of the higher boost, etc.