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      02-04-2013, 06:39 PM   #41
ColdList
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Drives: McLaren 675LT / C7 Z07
Join Date: Jan 2013
Location: Marietta, GA

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Quote:
Originally Posted by jmh View Post
So where's the secondary cat on the F10 M5 ?

There have been reports of folks running Eisenman exhaust (early in the lifecycle) where
the vacuum lines have been wrong or not attached at all, causing the car to run much worse than before.
Secondary cats are in the downpipes also. You have a 600 cell primary and a 400 cell secondary.
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