Maxing out 255lph fuel pump

Originally Posted by Averying

Question to those who have either Stillen or GTM supercharger kits: what power/boost levels did you max out the provided 255lph fuel pump?

Im making ~9.5psi of boost from my GTM Stage 1 kit and im running lean under hard pulls. The tune needs to add more fuel, increasing linearly up to a max of 20% extra fuel needed near redline. Symptoms of losing fuel pressure according to Eugene. I installed a fuel pump relay kit which didn’t help the issue. 340lph pump already on order.

I’m probably only making 450whp or so, which seems low to max out a 255lph pump. Anyone else need to go to a 340lph at this power level?


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