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      01-21-2012, 03:25 PM   #17

Drives: 2011 ZCP M3 - 2007 335i crashd
Join Date: Apr 2009
Location: NYC

iTrader: (4)

Originally Posted by DLSJ5 View Post

I would add that if the supercharger is tuned correctly, running at the proper psi and running the proper octane, a failure is very unlikely as well.
Originally Posted by BMRLVR View Post
+1 Given proper tuning, boost, and running an adequate octane rating a supercharged engine should be plenty reliable and a catastrophic failure should be highly unlikely.

A boosted engine most likely won't last quite as long as an engine running stock power levels, however, longevity will still be quite good and most likely in the hundreds of thousands of miles before needing a rebuild. This of course is providing that the maintenance intervals are adjusted to reflect the additional power levels!
Speculation..speculation and more speculation..the only way to ensure longevity is to leave the engine in its original configuration...