S1 & Emissions?
I recently purchased an '04 GT. I LOVE the power & I'm already looking to upgrade it. I'm planning to add Borla dual exhaust and probably K&N air intake. I may also consider upgrading to S1, but I was concerned about emissions testing for Illinois.
I've been reading several threads here and at several other forums. This will be my only car, so I want to make sure I have no problems. Will going to S1 prevent me from passing my emissions test? How about S2?
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