I’ve been talking to him through email. I need to just call...
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14 GT Paxton New P.B.
- Thread starter Gruca
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I’ve been talking to him through email. I need to just call...
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It’s a return style system. 8an feed lines and 6an return.
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I talked to Rodeheaver and he suggested I swap out the fuel pressure regulator. So I went and grabbed one and put it on. The old one did not hold pressure at all when I turned the key off. It dropped to zero immediately. The new one holds it. I’m going to test it later tonight, so I’m praying it finally solves my issue.
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fingers crossed for you!
Nope. Still losing fuel pressure at WOT. ****.
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Not when the regulator is supposed to add a pound of fuel pressure per pound of boost. Generally what you get when you are getting an aftermarket fuel system these days.
Unless you were just referring to what was mentioned about his system dropping off pressure as soon as the key is off.
The pressure should continue to build with boost. The regulator is supposed to restrict flow to the return line to increase pressure in the rails, hence more fuel to the engine.
I was given some tests to run today. Voltage at the fuel pump (not the FPCMs) at WOT, and amps on the power wires. Voltage should be over 14 at WOT. Mine only goes to about 13.2. It seems the pumps aren’t getting enough power supplied to them.
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I was given some tests to run today. Voltage at the fuel pump (not the FPCMs) at WOT, and amps on the power wires. Voltage should be over 14 at WOT. Mine only goes to about 13.2. It seems the pumps aren’t getting enough power supplied to them.
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Im sure you will figure it out. Let us know when you do, it is definitely voltage related not pressure regulator, so supply/pump side. Racing sucks this time of year anyways, im sitting out a few months too.
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Stupid question but you have checked your vacuum line to the FPR to ensure it's getting a clean boost/vacuum signal?
It’s actually only boost referenced. No vacuum.
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So the GT350 pumps flow 310lph. I’m not sure they are enough for 800rwhp on E85. But with a JMS boost a pump, they’ve worked for over 1,100rwhp. Guess I’ll bite the bullet.
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465s....just saying
Keep us posted.
Yeah, if they just dropped into my hat now, I’d do it. My JMS GT350 BAP is at my front door right now. When I get home, it’s going on. It will make those GT350 pumps flow plenty. It basically will turn that 310lph into almost 575.
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The one I got is a dual pump booster made for the GT350, since it comes stock with two pumps. It’s plug and play. So just one. It’s expensive as shit, but I’ve noticed most of the JMS ones are. The limit of my setup is 1000rwhp but that’s on pump gas, not E85. So 750ish is probably its limit on E85. Shaun’s 1130rwhp car is running the same setup on E85, with the BAP I got, so I’m fairly confident this should get my fueling back where I want it and allow me to take the waste gate off and make more power.
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I'd say that you will be good on fuel now....if not, something isnt right.
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