17’ Ram 5.7 Fuel Pump HP Limit

[MurderHemi]

I can’t seem to get any help from vendors so I guess I will post a thread on it. I’m running a FBO 2.9 whipple right now on 8psi. I bought a Proflex Commander Pro made by Advance Fuel Dynamics. It’s a flex fuel system that piggybacks the injectors and uses their program module and a flex fuel sensor to command the right amount of fuel depending on ethanol content. I was also told it actually changes how the injectors spray fuel depending on ethanol content to help combustion.

I want to run at least E50-E60 but want to make sure I have enough fuel. I’m currently running Hellcat injectors and have a Kenne Boost a pump ordered. I also have Whipples upgraded duel rails. I was just curious if anyone has pushed the limits of the later 4th gens fuel pump. I think in 2015 or 2016 the fuel pump was upgraded.

 

[Brandon-w]

Could just drop s stealth 340 or a walbro 450. Might take a little bit of modding but it's not hard. Probly better to spend the money on a good fuel pump rather than an engine. Says e85 compatible. Maybe contact them and see?

https://walbrofuelpumps.com/450lph-walbro-e85-racing-fuel-pump-f90000267.html

Sent from my SM-G981W using Tapatalk

 

[RedSRT4Me]

I can’t seem to get any help from vendors so I guess I will post a thread on it. I’m running a FBO 2.9 whipple right now on 8psi. I bought a Proflex Commander Pro made by Advance Fuel Dynamics. It’s a flex fuel system that piggybacks the injectors and uses their program module and a flex fuel sensor to command the right amount of fuel depending on ethanol content. I was also told it actually changes how the injectors spray fuel depending on ethanol content to help combustion.

I want to run at least E50-E60 but want to make sure I have enough fuel. I’m currently running Hellcat injectors and have a Kenne Boost a pump ordered. I also have Whipples upgraded duel rails. I was just curious if anyone has pushed the limits of the later 4th gens fuel pump. I think in 2015 or 2016 the fuel pump was upgraded.

View attachment 243817

The stock pump from my research is around 250LPH at 58 psi + or - maxed out with boost a pump. Maybe closer to 180lph at stock voltage.

With that said stay under 500whp unless you upgrade the pump.

 

[MurderHemi]

The tank looks pretty easy to drop I may just do that and replace the pump. I’m surprised it has enough fuel with my setup now if it’s only 180lph.

 

[James OBrien]

This is just my experience so mileage may vary, but with about the same amount of boost as you're looking to run and really big injectors and the BAP, I wasn't having any issues and injector duty cycle was still under 80 percent wat WOT and I dyno'd at 500 RWHP. That BAP really does make the stock pump work more effectively with the voltage regulator/boost. I've tried modifying my stock basket and doing the dw400 pump but it defeated me!

 

[RedSRT4Me]

This is just my experience so mileage may vary, but with about the same amount of boost as you're looking to run and really big injectors and the BAP, I wasn't having any issues and injector duty cycle was still under 80 percent wat WOT and I dyno'd at 500 RWHP. That BAP really does make the stock pump work more effectively with the voltage regulator/boost. I've tried modifying my stock basket and doing the dw400 pump but it defeated me!

What was the issue with the 400? Wrong connections?

 

[James OBrien]

The stock basket is somewhat complex. As I remember the pump wasn't exactly a direct fit, I had to use some clamps to hold it in place, the check valve setup is a bit weird, and there are lots of pathways/hoses that didn't totally make sense. You also have to try to keep the stock 'baffle' in there so you don't have fuel starvation during high acceleration. I did manage to get a stock basket with a DW400 pump working, but the specialized fuel lines require special tools and clamps to do the hoses and fittings right. I tried to use higher pressure standard rubber fuel line and stainless hose clamps and it blew apart (hose burst) after about a week.

Guys have done it, I'm just not clever enough to figure it out. I did find a guy that does these custom if you can get him to build it, he doesn't make much money off them and they're a PIA to build, but he has all the right tools/hoses/clamps and knows what he's doing.

http://stiegemeier.com/

 

[MurderHemi]

This is just my experience so mileage may vary, but with about the same amount of boost as you're looking to run and really big injectors and the BAP, I wasn't having any issues and injector duty cycle was still under 80 percent wat WOT and I dyno'd at 500 RWHP. That BAP really does make the stock pump work more effectively with the voltage regulator/boost. I've tried modifying my stock basket and doing the dw400 pump but it defeated me!

I’m struggling with my Pro Flex at the moment. Leaning towards it being something in my tune. Was trouble shooting for about two hours earlier.

 

[RedSRT4Me]

I’m struggling with my Pro Flex at the moment. Leaning towards it being something in my tune. Was trouble shooting for about two hours earlier.

The proFlex just relies in your injectors to do all the work if I'm not mistaken. Basically to fire the stoich down to like what 9:1 if your running ethanol?

 

[MurderHemi]

The proFlex just relies in your injectors to do all the work if I'm not mistaken. Basically to fire the stoich down to like what 9:1 if your running ethanol?

It uses a programmer with 8 processors one for each injector. It also uses a flex fuel sensor to read ethanol content then adds fuel and alters the injector ms depending on the ethanol content.

 

[RedSRT4Me]

It uses a programmer with 8 processors one for each injector. It also uses a flex fuel sensor to read ethanol content then adds fuel and alters the injector ms depending on the ethanol content.

Right. That sensor is what is manipulating your stock injector to fire the right AF ratio.

You'll need more injector eventually since it takes about 30% more fuel to fire the right Air/Fuel ratio.

 

[MurderHemi]

Right. That sensor is what is manipulating your stock injector to fire the right AF ratio.

You'll need more injector eventually since it takes about 30% more fuel to fire the right Air/Fuel ratio.

I don’t have factory injectors. I’m running Hellcat injectors.

 

[RedSRT4Me]

I don’t have factory injectors. I’m running Hellcat injectors.

It's the same principle. Running ethanol based fuel requires 30% more injector. Nice upgrade btw.

 

[RedSRT4Me]

I'd drop a hellcat fuel pump in if I was in need of more pump.

 

[Fast69Mopar]

I don’t have factory injectors. I’m running Hellcat injectors.

I have been able to modify the 4th gen fuel pump module to accept the Walbro 450's or the DW400 pump. It's not as easy to do like the 3rd gen 03-08 fuel pump modules. My crappiest install forced me to use a roll of aluminum foil to make the body of the pump fit inside the housing. The owner didn't/couldn't wait for the parts stores to open the next morning for me to correctly modify the pump or the housing.

The way that I have made this work many times was by taking the new pump to Lowe's and finding a piece of PVC pipe that was just too small for the pump to slide into. I cut a piece of the pvc pipe to half of the length of the pump. Then, I used my die grinder and my drill with sanding discs to make the PVC pipe inside diameter just large enough for the pump to press in.

Next, I shaved down the outside diameter of the PVC pipe to fit inside the original hole in the fuel pump module. I then connected the pump and filter and lines and I used epoxy to hold the assembly in place in the original hole in the basket.

My first Walbro 450 in a 4th gen fuel pump housing was done 4 years ago and it is still there to this day. Sometimes you have to be creative and let your imagination run wild.

 

[Wild one]

I have been able to modify the 4th gen fuel pump module to accept the Walbro 450's or the DW400 pump. It's not as easy to do like the 3rd gen 03-08 fuel pump modules. My crappiest install forced me to use a roll of aluminum foil to make the body of the pump fit inside the housing. The owner didn't/couldn't wait for the parts stores to open the next morning for me to correctly modify the pump or the housing.

The way that I have made this work many times was by taking the new pump to Lowe's and finding a piece of PVC pipe that was just too small for the pump to slide into. I cut a piece of the pvc pipe to half of the length of the pump. Then, I used my die grinder and my drill with sanding discs to make the PVC pipe inside diameter just large enough for the pump to press in.

Next, I shaved down the outside diameter of the PVC pipe to fit inside the original hole in the fuel pump module. I then connected the pump and filter and lines and I used epoxy to hold the assembly in place in the original hole in the basket.

My first Walbro 450 in a 4th gen fuel pump housing was done 4 years ago and it is still there to this day. Sometimes you have to be creative and let your imagination run wild.

You need a 3D printer,lol

 

[Fast69Mopar]

You need a 3D printer,lol

Man, if I had one or someone who knew how to use one I would be making all sorts of crazy stuff. I have recently acquired a large plasma cutter with a 6'x15' water table and trace technology. This thing is awesome. I am in the process of learing how to use the program that operates the plasma cutter and the program used to draw/design/trace new projects. Once I get this thing figured out I am going to begin with making some custom coil-over shock mounts that weld to the 9.25 Corporate Axle and also the 9.25ZF rear diff. They are going to be like mini four-link brackets that allow the installer and the end user to install a variety of shocks but coil-overs of any brand. That way the ride in the rear can be super customizable for any type of driving. At least thats my general idea for now.

 

[RedSRT4Me]

Also another member was looking to bypass the internal regulator in order to run an external one with a return line.



What stops you from just removing the corrugated plastic lines from the internal regulator and just running the feed straight to the top hat? Anything I'm missing to bypass the regulator?

Also I'd recommend running the return line with the corrugated plastic somewhere close to how the stock setup is.

 

[RedSRT4Me]

I have been able to modify the 4th gen fuel pump module to accept the Walbro 450's or the DW400 pump. It's not as easy to do like the 3rd gen 03-08 fuel pump modules. My crappiest install forced me to use a roll of aluminum foil to make the body of the pump fit inside the housing. The owner didn't/couldn't wait for the parts stores to open the next morning for me to correctly modify the pump or the housing.

The way that I have made this work many times was by taking the new pump to Lowe's and finding a piece of PVC pipe that was just too small for the pump to slide into. I cut a piece of the pvc pipe to half of the length of the pump. Then, I used my die grinder and my drill with sanding discs to make the PVC pipe inside diameter just large enough for the pump to press in.

Next, I shaved down the outside diameter of the PVC pipe to fit inside the original hole in the fuel pump module. I then connected the pump and filter and lines and I used epoxy to hold the assembly in place in the original hole in the basket.

My first Walbro 450 in a 4th gen fuel pump housing was done 4 years ago and it is still there to this day. Sometimes you have to be creative and let your imagination run wild.

Is it the container that holds the stock fuel pump the hang up I take it? I should have paid more attention when I dropped the tank to fix my fuel level sender. Just realized the replacement lasted longer than the original.

So the plastic holding the stock pump needs to be modified to hold the aftermarket pump? Check. I should order a stock replacement pump setup and an aftermarket pump. See what I can come up with. I wish I had more need around fuel system.

 

[Wild one]

Man, if I had one or someone who knew how to use one I would be making all sorts of crazy stuff. I have recently acquired a large plasma cutter with a 6'x15' water table and trace technology. This thing is awesome. I am in the process of learing how to use the program that operates the plasma cutter and the program used to draw/design/trace new projects. Once I get this thing figured out I am going to begin with making some custom coil-over shock mounts that weld to the 9.25 Corporate Axle and also the 9.25ZF rear diff. They are going to be like mini four-link brackets that allow the installer and the end user to install a variety of shocks but coil-overs of any brand. That way the ride in the rear can be super customizable for any type of driving. At least thats my general idea for now.

I sent this post to a buddy with a printer,he's in Texas,but i'm not sure how close you and him would be. He makes more stuff for the cars then trucks,but i'm sure he'd make stuff for the trucks to.