Quote:
Originally Posted by notchbackgta
There is a constant in the stock ECM to account for the fuel pressure drop, over RPM I believe it was, in the systems with "no return". Trucks had a return, so if you're running the truck tune and no return, that needs to be addressed.
The Gen IV and up do it with PWM to the fuel pump, so the pump only runs when needed, or only as much as needed to maintain the pressure
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Thanks for the input! The GM regulator/filter has a return port so I'll plumb it into the tank. Sounds like tune for the LS3 C&C crate motor is Camaro SS or Corvette based so I reckon it will handle the fuel pump as needed.
Still no word from the frame shop, so I've been gathering up parts to complete the swap. The CTS-V oil pan and kit arrived and looks like it will provide plenty of clearance for the cross member. I removed the manifolds, fuel rails and sound cover from the engine. I plan to paint the sound cover and the rail covers to match the truck color.
Speaking of painting... I made the third trip in the last four months to yet another cornea specialist who advised me to STOP doing paint and body work, welding and grinding or anything that would irritate my eyes, especially the right one. The growths over the iris are so severe, the doctors feel it's too risky to remove them surgically. That only leaves the option of trying to maintain the vision I have left. So I'm researching full face respirators with the corrective spectacle kit. I can use it for paint and body, but still not sure what I can do for welding. I know they have supplied air kits for welding helmets so I'll be looking at them also. Pretty sure Speedglas offers a model, but I need something full face to keep the fumes away from the eyes. This wasn't a budget item before, but it is now.
