Originally Posted by cappa
Does this kind of modification affect warranty?
no. When you put on parts like an air filter, or intake, or after the CAT exhaust, it does not affect the warranty, except they do not warrant the actual parts YOU added. I think you can add a stiffer antisway bar and be OK too.
Just like wheels and tires..
If you put in an aftermarket ECU 'chip' then that is a different game, and the warranty rejections will start. (partly because of their automatic assumption you are racing the car with a chip installed) Or say a different camshaft, then you void the whole engine warranty..