[Camaro1973]

Originally Posted by 7LitreC5

I am curious about this as well. I am at the end of my low side fuel system when I am running E85 (really E66 out of the pump).

Are these voltage boosters reliable and trouble free?

Asked my shop about it, told me not worth it and they just go straight to an aux pump. I’ll most likely put a mild cam on it with the fuel lobe to get it over 750 on pump this winter.

It’s going in shop next week so I’ll post dyno numbers with the headers, mag 2650, nw 103, And rest of the bolt ons.

[KingLT1]

Originally Posted by Camaro1973

Asked my shop about it, told me not worth it and they just go straight to an aux pump. I’ll most likely put a mild cam on it with the fuel lobe to get it over 750 on pump this winter.

It’s going in shop next week so I’ll post dyno numbers with the headers, mag 2650, nw 103, And rest of the bolt ons.

It is worth it depending on the application. Not everybody wants to drill a hole in their fuel tank for a Aux pump either. I am knocking on 700whp door based on my logs. I am running a LT4 in-tank with JMS on E60. Fuel pressure holds 70 psi.

[JFWJR179]

Originally Posted by Juiced1

You can get over 700 on the stock fuel system on just about any dyno. Keep in mind dynos can vary by 10% or maybe even more. So you really need to take everything you read with a grain of salt. We usually recommend a cam first to get past that 750 mark and then a low side to get past that 850 mark.

Meth is the wild card. You can skip them both if you run enough meth. For example we tuned our shop car with a 2650 on 93 first. The car has a cam and a DSX low side. We made about 800 to the wheels but the injectors were about maxed out. Adding meth gave us enough fuel to consider adding some serious E. But, I think we'll just add more boost instead and break 1000

Here is a nice build by CSP Complete Street Performance with stock fuel system, 93 octane pump gas, no Meth. 2018 ZL1 A10.






1. Blower: LT4 ported by Kong
2. Heads: LT4 ported by Texas Speed
3. Headers: Kooks 2"
4. Cold Air: Roto-Fab Big Gulp
5. Throttle Body: Nick Williams 103mm
6. Catch Can: Mighty Mouse
7. Interchiller: Forced Inductions
8. Cam: Texas Speed custom grind


780 rwhp SAE DynoJet 764 rwtq 2.1 upper stock lower
802 rwhp SAE DynoJet 804 rwtq 2.3 upper 9.1 lower
803 rwhp SAE DynoJet 813 rwtq 2.3 upper 9.1 lower


I know this is different from yours, but it ain't bad for ported LT4 blower
and you save money too.

[Harry76]

The car in the video above has a cam which increases fuel on the high side, when doing this you need to keep a close eye on the low side fuel to make sure you don't starve the high side, I think you would be playing with fire running this without a low side fuel upgrade.