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LiqTenExp · 07-20-2022, 05:14 AM

A stock ZL1 pump running at a peak of ~17.5 VDC will flow about 30% more fuel than stock at stock 14.5 volts. I used this thread as reference when deciding on what to do with my low side: https://www.camaro6.com/forums/showthread.php?t=477429

I think I have mine set to 17.4v ramping from stock voltage at 50% pedal position using a JMS FuelMax. I run about 4.8-5.0 ms injector PW, 75 psi low side, 3400 psi high side like this making the power I do on 93 with a little meth (50/50 for cooling). Without Meth I was around a peak of 5.1 ms injector PW. The stock pump, with cam fuel lobe, and JMS FuelMax (or equivalent) has a lot to offer when keeping the stock injectors.

I also find that my low side is more stable pressure wise as compared to stock. You all know the charging system is smart on these cars and you will not stay at ~14.5 volts all the time, the JMS FuelMax will cover you and make sure you still hit the voltage you set it for (basically a DC to DC buck converter).

I don't run E85, but for those that do this may give you an idea of how much hp you could reach on stock low side.

07-20-2022, 05:14 AM	#34
LiqTenExp Drives: 2017 ZL1 Join Date: Jan 2017 Location: NJ Posts: 905	A stock ZL1 pump running at a peak of ~17.5 VDC will flow about 30% more fuel than stock at stock 14.5 volts. I used this thread as reference when deciding on what to do with my low side: https://www.camaro6.com/forums/showthread.php?t=477429 I think I have mine set to 17.4v ramping from stock voltage at 50% pedal position using a JMS FuelMax. I run about 4.8-5.0 ms injector PW, 75 psi low side, 3400 psi high side like this making the power I do on 93 with a little meth (50/50 for cooling). Without Meth I was around a peak of 5.1 ms injector PW. The stock pump, with cam fuel lobe, and JMS FuelMax (or equivalent) has a lot to offer when keeping the stock injectors. I also find that my low side is more stable pressure wise as compared to stock. You all know the charging system is smart on these cars and you will not stay at ~14.5 volts all the time, the JMS FuelMax will cover you and make sure you still hit the voltage you set it for (basically a DC to DC buck converter). I don't run E85, but for those that do this may give you an idea of how much hp you could reach on stock low side. __________________ 2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93) Last edited by LiqTenExp; 07-20-2022 at 06:13 AM.