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07-02-2014, 09:39 AM
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#7
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Private First Class 
Drives: BMW M5
Join Date: Dec 2011
Location: Colorado
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Quote:
Originally Posted by CanAutM3
IMO, there is no gain at doing the OEM exhaust mod on the F8X.
That valve system in the exhaust does exactly what the mod on the E9X does. Look at the diagram, when the valves are open, the exhaust gases flow straight through.
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+1
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2019 Ford Raptor
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