If you're looking for a CAI, check out this article:
http://www.heeltoeauto.com/tech-articles/engine/intake-shootout-04-08-acura-tsx.html
A lot of guys, including myself, run the K&N typhoon CAI.
Headers will also give you a significant increase in HP (probably the most of any bolt on mod). Popular brands are Weapon R, CT engineering, or DC (if you're looking for something cheap).
Cat back exhaust is a fairly easy bolt on to DIY. Check out Fujitsubo, A'pexi, J's Racing, Tanabe (there are others).
Last but not least, Hondata reflash. Inexpensive, easy to install (Hondata does it for you) and a significant increase in performance when coupled with other bolt on mods.
http://www.heeltoeauto.com/ < your friend for buying and perusing.
Hope this helps.
http://www.heeltoeauto.com/tech-articles/engine/intake-shootout-04-08-acura-tsx.html
A lot of guys, including myself, run the K&N typhoon CAI.
Headers will also give you a significant increase in HP (probably the most of any bolt on mod). Popular brands are Weapon R, CT engineering, or DC (if you're looking for something cheap).
Cat back exhaust is a fairly easy bolt on to DIY. Check out Fujitsubo, A'pexi, J's Racing, Tanabe (there are others).
Last but not least, Hondata reflash. Inexpensive, easy to install (Hondata does it for you) and a significant increase in performance when coupled with other bolt on mods.
http://www.heeltoeauto.com/ < your friend for buying and perusing.
Hope this helps.