I recently put on the 70mm throttle body and trick flow intake plenum. I already had a BOMZ cold air intake on it. Now it makes a relatively high pitch whistling noise just be for half throttle. Is this normal?

Also, when putting in first gear, the transmission or rear differential makes a loud clunk. Also heard this once when shifting to second gear. Any ideas what this might be?

Last, but not least, going to put on steeda underdrive pulley system and pypes x-pipe w/ cats. Any tips for installation? Especially on the x-pipe. The manufacturer doesn't give all that descriptive instructions.

Thank you!