for more information about the obd2 workaround, go to preludeonline.com and use the search button and type in
"obd2 workaround" and you'll find more than enough information...if you already have the aem intake than save money for a decent suspension...this will help your handling and will help a bit on throttle response...if you do not want suspension then save for either headers or you can buy a muffler and have your exhaust piping customly made later on...most people buy exhaust right away without even knowing how much mods they are gonna do...if your gonna go forced induction then buy bigger exhaust piping around 2.5 to 3.0....if your just gonna have basic mods then i'd go with 2.25 exhaust piping...if your gonna go all out NA then i would get 2.5...it all depends on what mods your planning to do...so don't just go buy greddy evo exhaust the piping is 2.5 on those and without enough mods, i'd say you lose a little bit of power...