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Originally Posted by southern6er22
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No worries. By the time the guy with the N63Tu realizes he forgot to deactivate his auto stop/start during the red light, you'll already have compensated for his extra power by not having to wait for your engine to start.
Maybe BMW will have mercy on us and provide a SW update to add a few HPs. The N63 is certainly capable of more the 400 HP, even without valvetronic and the other Tu changes. Just let the turbos add another couple PSI of boost ought to do the trick. I'm sure the internals can take it. Doesn't hurt to dream.