[Xtcinvtec]

I've got I/H/E with a venom 400. I've got the AEM fuel rail & fuel pressure regulator. I have it at 40lbs. I don't know if I can go higher. I have the stock injectors.

 

[tegragsr01]

be carefull you dont want to run too rich. if you dont have the air to match all that fuel.

 

[tegragsr01]

pressure is sh*t with out volume.

 

[whoaduck]

If I am not mistaken, fuel pressure on a stock b18c1 is between 40-44 psi. You can probably bump that up without having too much trouble. Do you have an A/F ratio gauge yet? If not, you maybe want to invest in one. JMO!

 

[Rayman]

a/f gauge is pretty close to useless.

 

[Daremo]

People need to clarify if you are reading off vacuum, or on .....

The Type R off vacuum is between 50-52 psi, and that is a very rich fuel map.

A modded GS-R should be fine at about 46-48 off vacuum, and that is all the way up to R cam swaps.

 

[deMad10]

Off vacuum factory is between 48-55 psi.
On vacuum factory is between 39-46 psi.

 

[chingro]

i have the GSR head (ported & polished) on a LS block...last time i checked not even two weeks now..
my fuel pressure was 47psi...
i am takin for a 500 mile ride, them i will check the plugs and see if i am running rich or lean///

later

 

[94gsrsol]

Definately need air fuel gauge

An air fuel gauge could mean the life of your motor, I don't think your going to be running to lean but running rich isn't exactly good either. I would infest in a step up on injectors too if you have the pressure you might as well follow up on some volume.

 

[Daremo]

Yeah, but you need to qualify that as a WIDE BAND O2 GAUGE ..... the other one's are crap (i.e. Autometer, Greddy, etc.)

Expect to pay in the $300+ range for a REAL air/fuel gauge.

 

[Rayman]

Yeah, but you need to qualify that as a WIDE BAND O2 GAUGE ..... the other one's are crap (i.e. Autometer, Greddy, etc.)

Expect to pay in the $300+ range for a REAL air/fuel gauge.

I agree...