I have found bit's of info about this around the web, but not all in one place. I am looking to pep up my 2002 V6 3.7L. I have used K&N filters before on v8's and I think they work. as far as fancy tubes to intake systems i have no idea? I have heard of throttle body spacers, dont know about them, does it make it like a high rise manifold? how about power chips for engine, hype or real deal? you find any good ones? exhaust systems and mufflers, is it sound or power? last but not least, i read if you use a high flow cat it mess's up the computer, is that true? if i make a pipe section to replace cat when off road for straight pipe action, will it mess up the computer as well?