what would be a better fuel set up for 5lbs of boost?

[AN89HATCH]

rite now my fuel setup consists of a 255 lph fuel pump, stock injectors, and an 8:1 fmu. I plan to stay within 4-5 lbs of boost. maby sometimes 6 but nothing more than that. will my fuel setup be safe like this?. or should i buy ca injectors, and an safc, and get rid of the fmu? I do not really want to but the injectors and safc if i do not need them what do you guys think? this is for an sohc also

[skatanic28]

im planning on running those boost levels, and i think im gonna go with an adjustable fpr and the safc for awhile, then eventually get some sr 370's. i want to be able to tune my own car and just running an fmu doesnt really help me out in that respect.an 8:1 seems like that might be a bit much, at 6psi you would almost be adding another 50 psi of fuel to the system. i dont know what the injectors can handle, but i would look into that if i were you. im sure you could get by on the fmu though, seems like it would be rich though.this is all just stuff that i have researched...so im sure im missing something...

[Checkered-Member]

rite now my fuel setup consists of a 255 lph fuel pump, stock injectors, and an 8:1 fmu. I plan to stay within 4-5 lbs of boost. maby sometimes 6 but nothing more than that. will my fuel setup be safe like this?

That setup is perfectly fine, a little on the rich side for my taste but should do just fine

[AN89HATCH]

with my set up now, and llets say 6lbs of boost, will I be under 90 psi of fuel pressure total? will the stock injectors stop working at 90psi of fuel? havent alot of people run my set up?

[Structure240sx]

i was running 9psi with an 8:1 fmu for months jsut fine. your injectors will be ok. i eventually would invest in an safc and bigger injectors tho and have it tunned properly.

btw what turbo are you using? if you have not already bought the 8:1 i would look around for an fmu thats 4:1 to 6:1 for 5lbs,if the turbo is on the smaller size which i assume it is

[AN89HATCH]

the turbo i bought is a z31 t3. what do you think, is it on the small side? or will 8:1 be ok?

[ftrs13]

turbo is good, I have one, and 8:1 was REALLY rich, but definitely safe

[AN89HATCH]

when you say really ritch, does this mean my car will like be bogging down, or just shooting out flames, black smoke, etc? how was your gas milage when you had this setup, also how much timing where you running? And what do you guys do with your egr systems, and all the vacume lines going to it etc? btw thanks guys for all the help:)

[ftrs13]

just cut the pipe, didnt even unplug it. this was on KAe, but I did no timing adjustment, I think it was really retarded already, but I was getting 20 miles to the gallon, and it was black smoke backfire, no real bogging, loss of some power

[AN89HATCH]

when you cut the pipe, going to the exhaust manifold, do you have to plug the end of it up? or leave it open, and if you leave it open, will it cause a vacume leak?

[ftrs13]

I left it open and havent had any problems with it. Ill remove it at some point, but thatll be for when I swap out motors