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by mountneymk7
Thu Jan 31, 2013 4:02 pm
Forum: Fiesta MK7 'Issues & Questions'
Topic: Original diffuser with mountune cat-back exhaust?
Replies: 7
Views: 2600

Re: Original diffuser with mountune cat-back exhaust?

I'm looking at just a mountune cat-back but would like to know what bhp gains I get and what sort of increase of noise I get can anyone help ?