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      12-22-2012, 11:07 PM   #5
T-Man
Private First Class
United_States
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Drives: 535i M Sport
Join Date: Nov 2011
Location: Corona, CA

iTrader: (0)

So the 535 is basically putting out 245-250 rear wheel HP. And the JB4 is adding around 20-25 additional power. And with that being said based off that dyno reading the AR down pipe is creating almost the same HP that the tune is. Is this really possible? I'm still getting one either way just curious.