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2009 A3 2.0t Quattro, 112,000 Miles Parts upgrades list: Turbo back Magnaflow exhaust K&N air filter replaced stock unit Stock plugs - NGK Lasers Sound is awesome - deep and throaty. Just loud enough and not embarrassing in my developed neighborhood. Performance is a noticeable increase in...

Thanks for the feedback. No easy access to Dyno, but I’ll be happy to share my impressions. I was also told to just disconnect the battery and mapping would not be necessary; though I’m sure additional increases could be had. Thinking about also replacing spark plugs with something higher-end...

Hi all, just signed up cause I bought a 2009 Audi A3 2.0T Quattro with 112,000 Miles. Owned it 1 day and am having a turbo back Magnaflow exhaust installed next week. My mechanic is going to look it over good too. Any suggestions on what to have done or checked out. I read the post about cam...