I have always loved RX-8s and I recently bought a 2005 Red RX-8. I have seen some controversy over what modifications new owners should start with and wanted advice from people with hands on experience. I was thinking about catback exhaust and cold air to just start with but I read on here, that it will not boost the performance by much. Any inputs or advice on where to start? Thanks!

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Any help would be nice on where to start. Funny thing I havent had my RX for even a week and the radiator went out

 

What do you mean "radiator went out"? They don't just explode usually.

You'll really want to start with a couple of intro threads...
https://www.rx8club.com/new-member-f...t-here-202454/

Modding specifically..
https://www.rx8club.com/rx-8-discuss...rx-8-a-233937/