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- Thu Jan 31, 2013 4:02 pm
- Forum: Fiesta MK7 'Issues & Questions'
- Topic: Original diffuser with mountune cat-back exhaust?
- Replies: 7
- Views: 2569
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 ?