Quote:
Originally Posted by tibra1
Honestly my knowledge base for tunes on e9x M3s is minimal but I would say no..
There are very modest gains, removal of top speed governor..increased redline. minor remapped throttle or igntion maps...what does the tune maker say?
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I believe most tamper with VANOS. So thats what would make me worry.. if you had a VANOS failure. Easy out for BMW.