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I have twin 76 Chinese GT45’s. I’m thinking of going to twin 67’s with .81ar for quicker spool. Any thoughts or advice on this. 76’s spool slow for me.

So i have two gauges. I have a small mechanical pressure gauge on the the regulator in the engine bay. I also have an electric autometer pressure gauge in the cab. Cab reads 8.5 psi and the one on the regulator says 6.5 psi. Here is why i m asking. I have been fighting a rich idle and i set the...

I started a build a couple years ago with an all Original Lil Red Express. I have owned the truck for 15 years. I know its not an A-Body but this turbo forum has been very helpful in the direction I am going with the truck. I apologize in advance to the purists for what I have done to this...