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      11-16-2012, 10:15 AM   #5
1QuikWS6
No 55mph
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Drives: F32 435ix MSport ->M6
Join Date: Jul 2009
Location: Blitzburgh, PA

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2016 BMW 435ix  [0.00]
I know there have been recent posts regarding this - both from a vendor that admitted after dyno tests that the addition of their product would result in slightly lower power in the low rpm's, & members that have dynoed their cars after certain exhaust modifications that also saw a loss...

Don't really want to mention again who these vendors are, but apparently the possibility exists.

And I use the word 'backpressure' loosely - not near enough space to go into gas flow theory (and no one would read it anyway)

Whether or not this loss can actually be felt?
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