This may have been answered before but I couldn't find an answer. I want to get a better intake and exhaust for my ISF. But I don't want to void my warranty, so I was looking at the F-sport intake and exhaust. Is it as good as the ISF one or would I be downgrading? Has anyone installed them? I want an intake that will increase the performance slightly. Thanks ahead of time.

 

Neither of those things will fit on the ISF I believe. They were made for the regular 2IS.

Im sure a lot of members will chime in later, but an exhaust and and an intake will not void your warranty. There's a law that says that they can not deny your warranty unless they prove that your aftermarket parts directly cause your car damage.

On to the good stuff, if you do a search, you'll realize there are a few very good aftermarket exhausts available for your car. Just to help you name a few: joez, iss

 

The F-Sport line of intakes and exhaust systems won't fit the IS-F.