80lb/h injectors
TECH Regular
Joined: Dec 2014
Posts: 484
Likes: 18
From: Emory Texas currently
Unless u need the cash for other stuff keep them u may wanna run a small dry system one day and now u have the extra fuel on tap besides when my turbo **** out I ran mine n/a fine with same injectors
With a minor exception for enormous PD blowers, any injector that can be run with forced induction can work N/A. That being said, the bigger the injector, the smaller your idle tuning window becomes. At a certain point, low impedance injectors are required. At another point, the idea of idle tuning becomes a joke. Before you reach either of those points, emissions tuning has left the building. 80LB high impedance injectors used to be too big to tune on gasoline, but current technology has remedied that. Since you referenced e85 instead of gas, 80's are no problem at all.
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TECH Enthusiast
Joined: Jan 2012
Posts: 557
Likes: 9
From: Bowling Green KY
Here is my understanding on E85 pumps. There are many pumps out there that say they are acceptable for E85 that are no different than many others that do not say so. I think this AEM pump probably falls into that category. I've been told by one of the fuel pump manufacturers at a show last fall that the walbro 450 is designed from the ground up for E85 and is different, and other than custom manufactured or modified units is the only true OEM quality E85 pump. He told be that most of the other quality pumps that were designed for E10, will work fine with E85 but will have typically a 20% lower life expectancy on E85.
Regarding street power, you will likely make a little more power on E85 if tuning is maximized. You will burn a lot more fuel though, as you will want to be about 7.2-7.5 AFR with the E85 under power enrichment, for maximum power. It is hard to put exact numbers to it, it depends on the combo, and the temperature of the incoming air. Higher compression will gain more, and you will gain more on a 100F day than you would on a 40F day.
Regarding street power, you will likely make a little more power on E85 if tuning is maximized. You will burn a lot more fuel though, as you will want to be about 7.2-7.5 AFR with the E85 under power enrichment, for maximum power. It is hard to put exact numbers to it, it depends on the combo, and the temperature of the incoming air. Higher compression will gain more, and you will gain more on a 100F day than you would on a 40F day.
8 Second Club
Joined: Oct 2016
Posts: 28
Likes: 0
The most signifigant difference of a true E85 pump it is will be brushless or will use a carbon/carbon commutator system. Conventional carbon brush and copper commutator will have poor life in low lubrication of E85. There also some less important differences in bearing and internal materials to improve ethanol compatibility.
My company develops OEM replacement pumps, carbon/carbon is what OE specifies for E85. Our testing of copper / carbon vs. carbon / carbon in E85 is 30-70% less life, it is very dependent on the current draw of the pump.
I believe the Walbro 450 is carbon/carbon, I can't say what other aftermarket performance units follow this strategy.
My company develops OEM replacement pumps, carbon/carbon is what OE specifies for E85. Our testing of copper / carbon vs. carbon / carbon in E85 is 30-70% less life, it is very dependent on the current draw of the pump.
I believe the Walbro 450 is carbon/carbon, I can't say what other aftermarket performance units follow this strategy.
The most signifigant difference of a true E85 pump it is will be brushless or will use a carbon/carbon commutator system. Conventional carbon brush and copper commutator will have poor life in low lubrication of E85. There also some less important differences in bearing and internal materials to improve ethanol compatibility.
My company develops OEM replacement pumps, carbon/carbon is what OE specifies for E85. Our testing of copper / carbon vs. carbon / carbon in E85 is 30-70% less life, it is very dependent on the current draw of the pump.
I believe the Walbro 450 is carbon/carbon, I can't say what other aftermarket performance units follow this strategy.
My company develops OEM replacement pumps, carbon/carbon is what OE specifies for E85. Our testing of copper / carbon vs. carbon / carbon in E85 is 30-70% less life, it is very dependent on the current draw of the pump.
I believe the Walbro 450 is carbon/carbon, I can't say what other aftermarket performance units follow this strategy.
TECH Enthusiast
Joined: Jan 2012
Posts: 557
Likes: 9
From: Bowling Green KY
The Walbro 450 is an OEM pump designed for flex fuel vehicles, so it is perfect for E85. Many people use this pump with the factory regulator, but anything beyond a 255, I prefer an aftermarket fuel pressure regulator for.