AFTERMARKET EXHAUST

Help and advice section for technical questions on your Corsa.
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ianwilliams_5
CB-Uk Newbie
Posts: 22
Joined: Sat Aug 15, 2009 10:59 pm

AFTERMARKET EXHAUST

Post by ianwilliams_5 »

I'm not hugely clued up with this sort of thing but does an aftermarket exhaust back box cause mpg to increase?
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