I've heard about the stock lightning boost gauge being innacurate in some vehicles. Is that true? on the stock gauge at wot It read like 9 or 10lbs. I just installed an autometer ultralite boost gauge and it reads like 7 lbs tops from what i could see. could i be loosing boost because of belt slippage. thanks

 

Or a small leak in the pipe or joints before the guage.
Double check.

My Autometer and Stock one read pretty much the same till I go WOT
Then the stock one hides itself away