Quote:
Originally Posted by shenard
You may want to hold off for now and read for of the latest posts on E90post because BMW with their latest software updates to program 29.2 are able to tell if you install a piggyback system by monitoring several different variables and can void your warranty. Everyone with piggybacks on their 335's are now squirming in their shoes waiting for a way around this. BMW has wised up unfortunately. I am glad I did not order the 335 now. There is a new tuner that appears to have a new way around this and his product is only $300 and sounds pretty good but I did not have a chance to read 30 pages of posts.
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I heard about this ... Jim doesn't have anything yet for $300. And who knows how long would it take ...