Calling all experts.......Running RICH PROBLEM

[nismodave]

I put a remapped Enjuku ecu, z32 maf, and 550cc injectors on my car.

I have the walboro fuel pump, and S-AFC.

I cant get the car to lean out. Ive tried the s-afc on 2 in 2 out, and 0 in 0 out. And it only seems to adjust air flow when its in 2 in 2 out, but when I try to lean it out the car bogs down.

So its not leaning it enough, the pugs are fouled black, and I can only cold start it with starting fluid.

Im still running stock fpr. Could this be a major factor to the rich problem?

The car also misfires cruising at above 3k rpm.

:help

[pampadori]

what of the above listed parts were installed when the car was running ok? was it okay with the s-afc installed without the chip upgrade? was it okay with the chip upgrade without the afc?what was your last successfull setup?shaun

[FlyingChicken]

all that fuel and no where to go....

r u running bigger turbo? or 20psi on stock turbo?

[slw240sx]

back to the basics and trouble shoot it part by part

[the_invisible]

flyingchicken is right...having all these mods, you should be boosting pretty high to accomdate the excess fuel.

[nismodave]

flyingchicken is right...having all these mods, you should be boosting pretty high to accomdate the excess fuel.

I have a BB T-28 and Ill be boosting 16-17 psi at the track.

But the car should not foul out plugs at idle. The new ecu should be taling care of the problems of having big injectors.

Im gonna check the psi at the fpr tommorow, I think it might be sticking.

Im ordering a aftermarket fpr this week.

To be continued...............

[slw240sx]

nismo im having the same prob only with my CA.. i think my FPR is being over thrown by the pump and boost.

see look at my plug from # 1 after a day

[nismodave]

nismo im having the same prob only with my CA.. i think my FPR is being over thrown by the pump and boost.

see look at my plug from # 1 after a day

That is exactly how my plugs look.

[slw240sx]

well dave, i fixed my car so far, still running super super rich. but the car is running decently but the powers not where it should be .

[kevin240]

The fuel pressure regulator should be fine I have a skyline pump in my car and run the stock regulator. Can you try the stock ecu again? If not is the chip for the 62 ecu or E5. I have noticed some variations in fuel maps. Good luck. call if you need anything.

[slw240sx]

dave any update on if the FPR went out? mines fould out another set of plugs today in only 12hrs im running a t28bb too and boostin 10psi, on a walbro, no other fuel upgrade just spitting way way too much fuel and at idle its stalling it out and missing.. and im smoking black under boost and some times at idle!

[nismodave]

I ordered the Nismo fpr yesterday will be here tues.

I measured the fuel pressure and it was at 50 psi with vaccum off that is 10-12 psi too high.

Ill let you know what happens when I get it on.

[slw240sx]

dave, thats prob is the problemn, soon as i figure out if the Nismo unit fits the CA motor ill be ordering one i think ! and keep us posted i want to know! i should be ordering it as soon as i test my pressure, and under vacum is while it was idling right??

[nismodave]

You are supposed to measure fuel pressure at idle without vacum.