Originally Posted by HeyYou

Higher the vacuum, better the mileage.

Have a look down your throttle body, just to be sure.

does the smell get worse when you turn on the heater? any evidence of leaks anywhere?

Clean the remaining stock pulleys. A bit of dirt makes a lot of noise.

Originally Posted by articsilber323

i will double check the plenum ,

no sign of leaks anywhere at all everything is bone dry, and smell starts about when belt starts making noise after everything has been running 10-20 minuts and never goes away till the next day