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Old 11-24-2021, 12:19 AM   #75
Camaro1973

 
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Drives: 2019 ZL1
Join Date: Mar 2019
Location: NJ
Posts: 1,537
Fuel pressure issue fixed.

The dw300 pump didn’t have a check valve in it, looks like they re-designed the pump. The pump was replaced with a holly 12-170 100GPH pump, with a check valve. Other pump without check valve wasn’t building pressure fast enough. I guess that’s what happens when the fuel flows backwards

Holds a constant 80+ psi even with 40+ % ethanol
At around 840rwhp.
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928rwhp - 93 | 1040rwhp/898rwrq - E65 SAE

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