X2 on the hate for throttle body spacers...poor suckers that got cheated into buying them by marketing schemes. All they had to do was look at their engine and see the fuel injectors are way past the throttle body and where the spacer supposedly gave the air and fuel more time to mix...poor bastards.
I do love exhaust systems (one day I'll get a true dual with all the goodies when I leave CA and it's legal lol), tunes, speaker upgrades, and one day when I have space, time and money, I'll love forced induction too like you guys...