i went to import builders this passed week and they said that you do not need a fpr. the stock fpr would be just fine. they also said that no aftermarket fuel pump, or fuel rail would be needed. Anyone have any opinions about this?

 

I have hondata. Right now I have the stock fuel pump, and a cheapo b & m fpr, it works fine. The stock fuel rail will be good until you put out a **** load of power.

EDIT: I would atleast get some sort of FPR. You are gonna have a lower pressure with big injectors


[Modified by CDooMe2, 8:00 AM 8/14/2002]

 

It is my understanding that you need a 1:1 FPR if you are running boost. Maybe they thought you were NA. That shop is supposed to be very good. Others on this board will concur.

Hondata all the way!!!

 

Try getting in touch w/Vaportrail. He is quite a wiz when it come to tuning Hondata..I know there are others that know it too, but he is the first person to pop into my head. That's who I'm going to once my car is ready

 

How much whp are possible with 440cc and 1:1 fpr when the static fuel press is 45psi? Hondata claims about 280 flywheel hp, but not with 1:1 rising fuel press

 

I believe the stock FPR is 1:1. I'm running the high pressure Walbro intank, SARD FPR, AEM rail, and 550s with my Hondata. What size injectors are you gonna be running? I would at least go with a Walbro.

 

I have the Walbro fuel Pump from the JRSC type-R kit, don'T know exact what kind it is. I had 440cc and boosted 1.2 Bar, but everyone told me that 440cc are to small, so I bought me 720cc. But damn, the car needs even more fuel. I have a HAltech ECU and droved with the 440cc more than 8000 miles without a problem.

I drive only 170 miles with one gas tank.


[Modified by austrian type-R, 6:24 PM 8/14/2002]

 

i'm going to be running 720's with my set up.

 

No need for an aftermarket 1:1 regulator, the stock IS 1:1.
If your running 720's then it seems like you want to make some serious hp. The stock fuel rail needs to be upgraded at around the 325 hp mark. When this gets upgraded then do a real 1:1 FPR.
I dont trust anything that is stock and fuel related on turbo motors. I played it safe and went all custom on my fuel system.

 

The stock FPR is 1:1 but only up to atomospheric. It does not raise pressure once you are in boost.

 

Your wrong. Its been proven.

 

i'm a little confused. are the aeromotive and paxton FPR 1:1?? can someone explain the ratio 1:1 with the FPR?? thanks I'm trying to grasp a understanding

 

not true...
i have seen it work. I know others say it doesn't but its just a spring like most other regulators and if you put positive pressure on it rather than vacuum, it lets more fuel to your injectors rather than out the return.

 

the stock fpr (and any non-rising rate regulator) is a 1:1 reg. when you put 1lb of pressure on it (from boost) it will obviously take one more psi of fuel to get around it, makes perfect sense. if you're running .5 bar and you idle at 35psi, you'll be runnin about 45-50psi at peak boost, if I'm not mistaken?