a4x4high

I have an airaid cai and i have never heard a whistle but I do get the throaty sound but since the afe supertuck exhausthas been put on I dont hear the cai anymore . One question why would it not be right for a jeep to sound like a fullsize truck , my afe exhaust is pretty loud when im in the throttle and I think it sounds kinda tough and turns alot of heads as I drive by people.

henney13

Yeah i hear yea on that... I guess I'm not thinking ahead. Right now my jeep is pretty stock, but once I get my left, wheels and tires my jeeps look will be able to match the though sound of an exhaust!!

powrsurg

While I think throttle body spacers offer 0 performance gains, adding one solved the whistle problem on my avalanche. It was worth buying just to get rid of that noise.

Dieselguy3

The noise "whistle" is the air flow going past the throttle body. Smaller opening with more air (CAI with barely any pedal) makes the noise. Throaty sound lots of air wide open throttle body

Ryan0260

Normally it is the other way around

powrsurg

You're absolutely correct. I should have also stated that by adding the spacer there is an outside chance that it could get worse. You're basically looking to change the way the air is going through the TB. A spacer would certainly do that.