I know the difference between nismo s-tune and r-tune products. s-tune keeps your warranty and r-tune doesnt. If you get r-tune parts it only means that that part is not covered by warranty, right? It doesnt mean the rest of the car and stock parts arent covered does it? Also, i want a nismo echaust because it keeps the warranty but i know the stillen adds more hp? Is the nismo cai worth it. I cant decide betwwern nismo cai or pop chager. If any one has any advice plz let me know. Thanks

 

Your assumptions about the warranty are correct. R-Tune parts don't have a warranty but they don't void the rest of the car and it's parts covered under the factory warranty.

The difference in measured HP/TQ for the various exhausts is small, probably within the range of error of the dyno. Go for looks and sound.

You'll get a lot of arguments about the CAI vs. the popcharger. Again, the amount of gain is so small it's not worth it to pay so much more for the Nismo CAI when you can do the same with a Popcharger.

Try the Search function - you'll find a lot of posts already covering your questions.

 

Thanks for the advice Dave. HOw are you likiing your exhausts. Ive been listening to different sound clips all over the internet. I cant get enough of it

 

oh yea i've also heard some things about test pipes. Theyre cheap and supposedly add something like 8 hp.