Ok here goes my problem! I installed a Airaid throttle space,BBK 75mm throttle body, and a K&N cai. After install of everything. It sounds like a trumpet kinda backfire thru the cai. It does go away at a higher rpm but it comes back and the idle in up and down. Anyone ever had this problem or heard of this before? Disconnected the battery over night trying to reset the computer. Didn't help! Changed back to original TPS and didn't help! Help me!!!!

 

Same thing happened to me. On mine there was a plastic piece inbetween two pieces of hose connected to the right of the throttle body that I had forgot to put back on. K&N directions I think tell you to replace with a piece of hose included with the intake. Ever since I put that plastic piece back in its never made that sound.