Well I did the poor man’s non-seq mod, and now get an all-rpm buzzing or air leak noise right between the air pump and coupler. I double-checked the plugged and zip-tied pre-control actuator hoses under the pressure tank and removed and inspected the coupler, which was in good condition. Double-checked the t-fitting between the now-shared CRV and BOV lines. Checked the CCV plugged lines also. Buttoned everything back up snug and it still buzzes with an air leak sound, even at idle. Am I supposed to plug the CCV nipples on the Y-pipe, or the pre-control actuator nipples? Is there a hose or intake line on the air pump that can come loose? Or is it supposed to sound this crappy and buzzy now? I don’t mind the “boominess” of the mod, but it sounds like an uncorked civic in the engine area.

P.S. Boost maxes at 7-8psi and builds gradually and not an immediate 10psi at 3000 rpm when throttle is buried.

 

I have the buzzy sound as well...kinda like a rattle...

I thought it was just from having the door wired open?

 

No, this definitely comes from the air pump area and is noisyy as hell with the hood open.