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Old 07-30-2014, 05:19 PM   #642
OICU812
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Join Date: Mar 2013
Drives: Scion FR-S 2013
Location: Edson, Alberta, Canada
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Garage
Quote:
Originally Posted by CSG David View Post
I'm no Mike, but any modification to the factory catalytic converter will require a retune.
@CSG David

I should have mentioned I DO still have stock header however so just overpipe back has been changed.
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