You're wrong about pulleys messing up electronics. My friend has three 12" subs and THEY mess up the pulleys. Somehow the electronics or maybe vibrations from the system interfere with the friction of the pulleys? Ohh yeah and I said 8-12 hp to the flywheel. I find that hard to believe myself but that was listed on the AEM site, so why don't you march yourself down there and yell at them. :fawk: Than again they list hp increase from their CAI at 10-15 hp yet that might give you 2 to the wheels. So I have yet to understand why everyone on here spends 200 on an intake as opposed to 200 on a pulley set which would give you twice the hp. But whatever floats your boat. Spend 200 on the cat if you really want hp increases tho (LOL).