I'm new to the Audi world. Will be putting my order for the A4 1.8T Quattro later this month. I used to have a 1996 M3, and I know that BMW has a dedicated aftermarket company, Dinan. I was wondering if thereis an aftermarket performance company that strictly deals with Audi and does not void the factory warranty.

 

every thing voids the warentee. some good sites are pes-tuning.comgoapr.com supremepowerparts.com. there are plenty more sites too for aftermarket parts.

remember all aftermarket stuff voids your warentee

 

Audi does not have a performance partner in the USA. They are not as mod friendly as BMW and most modifications will void warranty like hb972 says.

However you can add a socketed GIAC chip that you can remove and put back your stock one before going in for service.

Try www.awe-tuning.com