Agreed. Most auto makers, when they produce their own aftermarket bolt-on's are concerned with reliability #1, performance second. The NISMO exhaust for example is downright a work of art to all the senses.evildky wrote:nismo parts are inteded for street use and as far as I know are all 50 state legal, that being said, I think they try to keep from pushing too hard, and once they develop a part they are done, for many aftermarkets they make one part, then someone else makes a better version so it's time to re-engineer, nissan makes cars, trying to keep up with the aftermarket just isn't possible or practical