New Member Fore Fuel System Question

[gen3.coyote]

Good evening, Everyone!

I have a 2019 5.0

Whipple Supercharger
Fore Duel System
ID1050x Injectors
3.25 pulley

My question is after install and contacting lund for my supercharger tune.

They came back to me saying my High Pressure side is reading low pressure.

After researching, contacting Fore, and etc.. I believe I have came to the conclusion, but I need confirmation.

My fuel line straight from the pump should hook up on the passenger side of the fuel rail and the return feed will be on thee driver side?

I've attached my data log.

Thanks for help in advance!

View attachment 446666

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[Vegas5OH]

are you running a dual regulator set up or single?

 

[gen3.coyote]

are you running a dual regulator set up or single?

Single regulator set up.

 

[Vegas5OH]

What base pressure are you running? I set up a 18 whipple car just like yours, feed to drivers side rail, return off the passenger just like you have it. No fuel issues. I think the 18+ cars the proper way to run it though is a dual regulated set up. I set up a hellion car with the dual regulated fore kit I would run it that way for sure to make sure the pressures stay stable on the di and port sides.

 

[Kona 18]

If you are using a single regulator set up you need to bump up your base pressure and not run vacuum/boost reference. Tell your tuner to send you a static fuel pressure tune, I personally run mine at 62psi and it will hover +/-2psi most of the time.

If you want to keep the reference, I'd recommend 60psi base pressure

 

[gen3.coyote]

Lund is telling me that they should be reading 900psi for FRP_Actual in the datalog and it’s reading 60 +/- where I have my regulator set to. T

So I can’t proceed with my tune until I fix it. Driving me insane.

 

[5.0_SD]

My fuel line straight from the pump should hook up on the passenger side of the fuel rail and the return feed will be on thee driver side?

feed to drivers side rail, return off the passenger just like you have it.

Sorry, I know nothing of this but was reading for knowledge and notice that it seems the OP does NOT have it the same as described (I quoted the discrepancy). I am just seeing two different statements so maybe that's the issue? Just trying to help.

 

[illtal]

Sorry, I know nothing of this but was reading for knowledge and notice that it seems the OP does NOT have it the same as described (I quoted the discrepancy). I am just seeing two different statements so maybe that's the issue? Just trying to help.

It's likely a regulator issue. He's gonna have to give us pictures or something to help him out.

 

[gen3.coyote]

I’ve uploaded the pictures.

Update on some stuff, the system was used and missing some lines. I ordered some more so I can connect the second regulator.

the feed goes into the T fitting that is attached to the DI Pump and rail. Then goes through the rail into the regulator on port that side, then returns.

 

[illtal]

Is the return on the bottom for the fore regulator? I only ask because I can't see it.
You should try to remove the boost reference and go with a 60 PSI base and see if that fixes it in your log.

 

[gen3.coyote]

Yeah, the return feed is at the bottom of the regulator. I’ll remove the boost reference today and try that out. I did do some troubleshooting and unplugged my sensor to see if I get any different readings.. same, so maybe a faulty fuel sensor?

 

[illtal]

have you driven the car with it like it is now? before this you had a stock returnless setup?
if it is a bad sensor you would get a CEL for that and a limp mode. seeing how the system blends both di and Port.
Are you throwing any cels?

 

[gen3.coyote]

This is the code I throw

 

[gen3.coyote]

The car was fine before the install. Now I struggle to start up, car seems like it has no power what’s so ever.

 

[illtal]

This is the code I throw

I looked up that code, @Kona 18 runs a single regulator You shouldn't have a problem with this single regulator setup.
Have you ran E85 and 93 in your system? Check your filters to make sure you're not clogged up anywhere.
you can subsequently try to dead head your system like stock: Feed to Regulator, Driver side to passenger side to HPFP. Set to 58~60PSI
See if that recovers the system

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