[drtwo]

I like the responses and still feel that unless you are going to (down the line) do some major modification (NOS, TURBO, SUPERCHARGER) which the VAST majority are NOT, headers and CAI may give you a few extra horsepower, but until you gain well over 100+ HP you won't see any TRUE performace gain (ie.. compare the V6 to the V8 in the 1/4 mile times...and that's OVER 120 EXTRA HP!!!!) 10 here and 20 there will only give you milliseconds... so unless you are a hard core racer...DO IT ONLY FOR THE SHOW, NOT THE 'GO'...