General 1g Base Fuel Pressure

[MidnightRun]

Ok, after doing a good deal of searching, I'm officially confused. I plan on doing some tuning on my car tomorrow with a tmo and an safc, so I need to make sure I'm getting started on the right foot.

First Question:
What is the Base Fuel Pressure on a 1g 6 bolt Turbo? What sould I see with the vaccum hose on? And what should I see with the vaccum hose off?

Second Question:
I'm getting what seems to be fuel cut on my car that really puzzles me. Anytime I go WOT, the car pulls strong, but then hits a brick wall at 5900 rpms. My mods are:

Big 16g @ 15psi
2g MAS
Walbro 255 HP
510cc Injectors
Apex S-AFC(zero across the board)
Spoolin Up AFPR(38psi@idle with vaccum hose on!)
Stock SMIC
Greddy Type S
Dejon Tool Intake Pipe with K&N Filter
Lots of other supporting mods

I think I may be actually getting too much fuel, and getting fuel cut like symptoms. I don't think I have any boost leaks, but plan to check again tomorrow. Thanks for any help everyone.

 

[HiFi TSi]

You should start tuning your afc. Start by making it leaner and then you'll be moving away from fuel cut so you shouldn't have a problem with that anymore.

 

[larryd]

From a post I asked a long time ago and reply by JW

"Stock base fuel pressure:
1G - 36-37psi
2G - 42-43psi

Should be done at atmospheric pressure (without hose). You will want to put and pull the hose a few times just to be sure the pressure is set correctly.

You can set your fuel pressure to your liking because it's all up to the tuning. Turning up the base fuel pressure will make the injectors *act* bigger. Most injectors are rated at 43psi. 1G stock injectors are actually acting like a 410cc instead of 450s because of the lower fuel pressure."