I think I see your problem
I have never used a blue pump but am familiar with the reds. If they are the same other than the regulator. I know your problem.
The red electric pumps have no suction. They have to be installed below the tank and gravity fed. It seems you have the pump in the trunk above the tank. It is unable to keep up to the demand at higher rpm.
Install the pump below the tank. I built a bracket under my trunk for the pump and filter. See attached pic.
PS: That rubber line will not pass safety at the race track. Max of 12" in the entire system from tank to carb.
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Last edited by bracketeer; 02-05-2005 at 01:34 AM.