1g frp psi and flow questions

[WORPeclipse]

I am looking at runnin a 1g FPR with my new setup.

What i'm trying to find is the psi of this regulator. I have searched and keep comein up with diff stuff on the forums but i cant find anything when i google the part number. Denso - 1382. The reason i am askin is i am running a walbro 190 lph pump with a rewire kit and have a 255 lph on the way. I've been told the 2g fpr wont flow flow enough for the 255lph and the 1g will. I worried it wont have the correct pressure.

I am also runnin EVO 510cc injectors with s16g turbo as well as other mods.

 

[GRAVEDIGGER]

2g cars run about 43psi base fuel pressure while the 1g cars run about 38psi base pressure. I don't know what you would gain from going to the 1g regulator. Why not go with an adjustable one? With a 255lph pump it's a good possibility that you may run into a problem with the pump overrunning the stock 1g or 2g fpr. You're better off to just get an adjustable one and be done with it. Stock regulators and 255 pumps =

Here's the stock pressures on the different models for reference. These are with the vacuum line removed from the regulator.

1G n/t - 47-50 psi
1G turbo m/t -36 - 38 psi
1G turbo a/t - 41 - 46 psi
2G turbo - 42 - 45 psi
2G spyder - 47 - 50 psi

 

[WORPeclipse]

I plan on runnin a fpr. Right now i just dont have the extra cash for it. When i got the car it was supposed to have a good motor in it. Well it ended up been shot major crank walk. There went the money i have for extras. I also have a Walbro 190 lph. Thinks its best to run the 190 for now? The reason i was thinkin the 1g is cause of the return size of the fpr. The 2g has a very small return and i have been reading how the Walbro 255 over powers it and not the 1g. Thats the reason i planned on runnin it for now. Will the 190lph be good enough for the 510cc injectors? I have also seen where the 255 increases the fuel pressure with out a after market fpr, so wouldn't bring the 1g fpr back to the right pressure? Would it be better to find a 1g auto fpr or now?

 

[GRAVEDIGGER]

It seems like you're on the right track now that you've explained your situation a little better. As long as you stay with the 190 fuel pump for now I'd say you'll be fine. You should try to find the 1g auto fpr so you could be right in the range you need to be and that should make for a happier running car. Good luck

 

[WORPeclipse]

Ok cool thanks.

 

[habitatguy187]

A 1g fpr won't bolt up to a 2g fuel rail.

 

[WORPeclipse]

A 1g fpr won't bolt up to a 2g fuel rail.

No but it will to the OBX rail. The OBX rails will fit either the 1g or the 2g fpr. The end has 2 diff patterns on it. And i also have the 1g rail.


Sorry I thought I posted that but it must have been in the thread on dsmtalk. I have a complete 1g rail, complete 2g rail both with stock fpr's and a OBX rail.

also what does everyone think about the B&M Command flow? I had a buddy run one and his car caught on fire from a fuel leak, but he used vacuum line instead of fuel line for the return hose i think. I do know the return hose came apart.

 

[ramsack]

1g n/t: 47.6
1g turbo automatic: 42.7
1g turbo manual: 36.3
2g turbo: 43.5
2g 2.4: 47-50

Ranges are retarded, stop giving ranges. Get an AFPR and be done with it. All stock regulators will quickly be killed by a bigger pump. Go with a name brand like Aeromotive, Fuelab, or AEM. Stay with a stock rail, they are plenty big. If you're tuning anyway, then just stay at base 43.5 pressure that ALL injectors that are sold for these cars are rated for. Even on a 1g turbo M/T a huge upgrade would be DSMLink and bumping the pressure to 43.5. They underpressurized them for some reason.

 

[WORPeclipse]

I plan on upgrading to one just cant at the moment. I am goin to be chipping the eprom ecu and useing tuner pro software. Can I up the pressure that way?

Also the OBX was free to me.

 

[GRAVEDIGGER]

1g n/t: 47.6
1g turbo automatic: 42.7
1g turbo manual: 36.3
2g turbo: 43.5
2g 2.4: 47-50

Ranges are retarded, stop giving ranges. Get an AFPR and be done with it. All stock regulators will quickly be killed by a bigger pump. Go with a name brand like Aeromotive, Fuelab, or AEM.

The op already said he doesn't have the money for an aftermaket afpr right now. He is trying to get by with what he has right now. He isn't installing the 255 pump yet either. With the 190 pump he should be ok from what I have seen.

You listed a fuel pressure range for the 2g 2.4 ramsack.... You should be ashamed of yourself for being so retarded.

 

[ramsack]

No. Pressure is controlled by the fuel pressure regulator. Just get an AFPR. You want to stay at 43.5 psi.

 

[akira235]

no, fuel pressure can only be modified by using an adjustable fuel pressure regulator.

 

[WORPeclipse]

Thats what i was thinkin but when i read "1g turbo M/T a huge upgrade would be DSMLink and bumping the pressure to 43.5" how it was worded made me wonder.

Will the stock 2g fpr flow enough for the 190 lph pump or will it over pwoer it. I do have the pump rewired.

 

[ramsack]

The FACTORY manual gives a range for both the 4g64 and 4g63, but we all know the 4g63 is just 43.5 psi (3 bar). No one needs to be tuning a 2.4, and if they do put a regulator and pump on, and go to tune other injectors, they SHOULD be at 43.5 psi. Just buy all the parts one by one and THEN install them all at once. Problem solved. Planning and executing, not just throwing parts on with no method of compensating for them. You'll want to do a rewire, too. That can be done with a cheap amplifier wiring kit and a relay. It can be done on a stock pump without messing anything up.

You won't know if a regulator is good enough without a fuel pressure gauge. They make kits to install one on top of the fuel filter. It is said that a stock regulator is good enough for a 190, but an old one may be overrun.

 

[GRAVEDIGGER]

You'll want to do a rewire, too. That can be done with a cheap amplifier wiring kit and a relay. It can be done on a stock pump without messing anything up.

HE HAS A 190 PUMP INSTALLED ALREADY. HE ALREADY HAS THE REWIRE DONE TOO. Just calm down it'll be ok.

 

[ramsack]

Hey, oh my god, sorry about the 190 being installed already, and as for the rewire, look at the time stamp on my post. It was posted a minute after his when he says he has the rewire. YOU CALM DOWN

The 1g FPRs overrun more than the 2g, and that's with a 255, so you should be fine staying with the 2g.

 

[GRAVEDIGGER]

Hey, oh my god, sorry about the 190 being installed already, and as for the rewire, look at the time stamp on my post. It was posted a minute after his when he says he has the rewire. YOU CALM DOWN

Here is a direct quote from the op's VERY FIRST POST. "The reason i am askin is i am running a walbro 190 lph pump with a rewire kit and have a 255 lph on the way." No hard feelings though ramsack. You called me out so I had to call you out. Let's just call it even ok.

 

[ramsack]

Heh I read it like 5 times before and didn't see that, and now I finally did. Doritos and soda, the breakfast of champions!