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Originally Posted by Jacobbeckley
Great link. The chip does appear to be a scam. I thought it might have been, however I am getting frustrated with the amounts of mods I can do to enhance performance in the 535i. Does anyone know of the best mods for the power?
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Jacob
There is a thread about Performance Imports tuning. I think it may be the solution for you. Also, Eurocharged in Texas. I think they have a tune with 2 stages for a fair price. you should give them a call.