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Engine upgrades? these worth it?

713 Views 2 Replies 2 Participants Last post by  325i-Vizon
Hmm, was looking at the renn-sport site and saw this stuff, and that it could fit on my car......


the camshafts, cylinder heads,power kit, differentials worth it? And how much added hp / torque u think i would get? I'm probably also getting the gruppe M intake, good idea? How much hp on this intake? Thanks!
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why not get the power packages?? technic stage III or IV will be nice.
hmm what does this power package include? And how much for the III or IV? What kind of shop can do work on this?
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