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Just installed a JB3 on my bone stock 2011 135i M package. Gave me 273hp on a DynoJet (stock) and having problems getting numbers with the JB3 installed (gave 288hp, expected more). Anyway, just today I raced with a 335i (N54) of a good buddy of mine and the "ass-o-meter" felt it like 310hp!!! JAJAJAJAJA!!! The 335 is giving 398hp rwhp. It beat the crap out of my 135 but it still felt pretty damn fast to me. My car is DCT, so I am not sure if I'm doing the "driving" on the dyno, right. Or that the ECU is just busting my balls on the Dyno for some reason. Any feedback will be appreciated!
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