leifab wrote:
Most, if not all, of the r-tune parts are not D.O.T. approved and thus are intended for off road use only. And all nismo parts maintain your warranty.
Yes and no. According to Nissan, R-tune products do not carry any kind of warranty. S-tune products only carry a warranty when installed by a dealer.
As to how it affects the rest of your factory warranty (engine, drivetrain, etc.), I think all Nismo parts are in the same boat as any other aftermarket part: if they can link it to the failure, the warranty goes out the window.
Correct me if I'm wrong ...