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      01-19-2013, 11:49 AM   #15
doughboy
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Drives: 2016 M6 Gran Coupe LCI
Join Date: Jan 2009
Location: Staffs

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Quote:
Originally Posted by nicktyler View Post
Thats pleasantly surprising that you passed. I was thinking about going the same way a while back but thought it would be a lot of hassle to keep changing around at MOT time.
Theres not much gain to be had removing the secondary cats, but they will keep you OK come MOT time.

The primarys m ake most hp difference.
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