Anybody out there know what the factory setting is on the wastgate on 01 LB7

I think it is 22psi on a stock motor. A modified motor will continue to build boost even after the OEM wastegate actuator begins to open. I got as high as 28psi on my OEM actuator before upgrading it.

Factory stock is 18 -19 psi.

Stock should be closer to 22psi maybe a little lower... Edited by: GMC2500HD