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  1. #1
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    335is difference

    So I installed a BMW N54 performance package on a 335 the other day. im pretty sure this is what the power difference is gonna be with the upcoming 335is. It basically adds another radiator cooler, new fan, and software gets re-flashed. It comes with a bracket that holds up the new cooler on the left side of the car, new cooler, a new wiring circuit w/fuse/relay and pins for the new fan, new coolant hoses that t in the new cooler and u get the tune from BMW that ups the Tq limitations and adds boost. I dont know if its worth all the cash but it does come with BMW warranty which I guess some people will pay a premium for.

    Well just thought I would post this so u N54 guys could know whats involved in this package.

  2. #2
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    That is awesome!

    Do they allow you to take pics?

    For a factory package, I admit, it is pretty good. Clearly it can be spanked for the $ per hp in the aftermarket, but the fact that BMW is even doing this is great.

  3. #3
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    I agree and I will try to take some pics on my next install.

  4. #4
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    It's a nice kit, but not much performance gain. Also has been prone to CELs for some reason. You'd think BMW would know how to tune their own ECU! Click here to enlarge

  5. #5
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    OP - you think you can get us a dyno by any chance? just wanted to see what its actually making

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