Gtfold00
Active Member
- Thread starter
- #1
Hi all, I''ve purchased Left & right Headers – 1 7/8″ with 3″ for my 2017 GT. I've also purchased some extension leads for my O2 sensors.. I know there has been heaps of forum talks about exhaust/ headers. My question is, would I need to get a tune after I install the headers for a (AU) mustang?
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