My car is running like crap.. computer is not adjusting A/F... would FCD have anything to do with A/F on map?

In simple terms yes but you're going to have to elaborate a bit. I can barely tell that's english.

__________________________________________
~Chris
03 SRT-4

FIX YOUR VAC LEAK.

-MIKE-

Stroked 2.2L

Ya man you need to tell us more than 'its broken' if you want help.
What is your current setup, and a few more symptoms.

Kevin
The old:


The new:

Real bad idle, smooths out when giving gas. On boost gauge holding 10 psi at idle.

check your pcv. blow and suck through that tube that goes from valve cover to intake mani. If you can suck and blow one way, then that's your problem.

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if its not trimming fuel, you've got a MAP sensor problem, an O2 sensor problem, or its just flat too rich.

What are the details on your fuel system? Give us some clues here so we can actually help you rather than just shoot in the dark.

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Factory Service Manuals: http://nawdu.de/files/

i am very much interesting in hearing more on this problem
i have the exact same issues
10:1 air/fuel at 11 psi

brand new pcv and o2 sensor

regarding the map sensor
do you have a missing link or FCD
or does anyone know if it would matter either or

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I'm using a FCD that came with star kit at the moment. 2GNT member Star Turbo Talon is making me a adjustable FCD which you taylor to your car. I had missing link had it on the car for about 2 minutes..they are junk. I think my problem is vaccum related because when I started my car for the first time after installing turbo It ran ok. I was holding 20 psi at idle now only 10. I'm taking peoples advice. Most likely vacum. I would like to use a SAFC but what is so secret about getting them to work on our turbo'd NT. No one has yet answered that. FCD alters map voltage...so does SAFC how can you get them to work together.

______________________________
If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.

'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

Then how do I hook it up? I had a SAFC and got rid of it because know one could answer. Sorry FCD prevents it from going over 4.6Vdc. Still were playing with the voltage which SAFC works with "one reads map voltage, the other manipulates it". How does it work?

______________________________
If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.

'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

Thank you...that was the answer I was looking for...I seen the right up's. Wasn't sure if that was the answer to my question..so to use a SAFC with a turbo kit you need to use the FCD. As simple as that..correct?

Once again...I get no answer to confirm...the turbo 420a and the SAFC. I'm starting to think this is B.S. Is the article fooling the SAFC about running with a turbo? or is it just hooking it up. ANSWER PLEASE!

you can use a ML with the safc. i am going to in about 2 days now!

-MIKE-

Stroked 2.2L

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still too much fuel. I got car running again not sure what i fixed but it is working. It seems to be when boosting the gas build up is back firing. Does anyone have any ideas? Do you think something is wrong with my FMU?

I wanted to add that my A/F gauge is pegged all the way out...

Jeesus,
it took 3 seconds..
here SAFC install instructions.
"SAFC INSTALL"
http://www.2gnt.com/nuke/modules.php?name=Sections&op=viewarticle&artid=69
and i have no clue as to where you get that the missing link is crap. mine has been holding 16psi just fine, and no map problems.

and just to simplify. missing link is to prevent the map from "seeing boost", the SAFC is used to lean out bigger than stock injectors to help with idle and tune fuel curve.
you got your answer a few posts up you just did not look. the write up on fooling the safc is something different, is to trick the safc into leaning according to psi and not throttle position. it says it right on the tittle of the write up.

-97 GS (First project, 299 whp)(sold)
- 97 RS 2.6 last numbers: 306hp, 352tq @16psi (Dead, parted out)
- 99 GS OZ, Hahn Kit, 56k miles (Sold)
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- 00 Nissan Maxima GLE (Daily Driver)
- 02 Audi A4 1.8T Quattro

Ok Kyle let's start with the basics? What injectors are you running? Stock? What do you mean by an adjustable FCD? If you still have the missing link then put that in and get the FCD idea out of your head. If you are still on stock injectors then you don't need the SAFC. What FMU are you running? And what do you mean by 20psi at idle, I assume you mean 20inhg, correct? Now if what you really mean is that your idle went from 20inhg to 10inhg, then the first thing you need to do is fix the vacume leak. See you have to give us details for us to help, and getting frustrated with the members who are trying to help, only makes them stop helping....

I edited to the wiki!

Ok so with stock injectors and the star FMU you shouldn't be running super rich. That is the base stuff that came with the kit, so it is designed to work together to produce the proper results. What does your boost/vac guage read at idle now that the vac leak is fixed? Also do you have your vac connections hooked up properly to the FMU? And are the fuel connections going through the proper feed and return lines on the FMU? You did run a return line for the fuel right?

I edited to the wiki!

you don't run a return line with the basic star kit. check your fuel pressure gauge and boost gauge. could be that the FMU is bad. ohh and what do you mean by insanely rich? (lots of black smoke?, fuel sputtering out, etc?)

-97 GS (First project, 299 whp)(sold)
- 97 RS 2.6 last numbers: 306hp, 352tq @16psi (Dead, parted out)
- 99 GS OZ, Hahn Kit, 56k miles (Sold)
--------
- 00 Nissan Maxima GLE (Daily Driver)
- 02 Audi A4 1.8T Quattro

I mean rich to the point where the smell will make you damm sick. I think I have it figured out..I might have my FMU lines backwards. I guess it all depends how you look at this thing. It is obvious which is the vac line. So to me the other side was the bottom (this would be the straight barb'd fitting and the 90 degree fitting as IN from fpr... I think people refer to the 90 drgee fiting as bottom which is the true OUT to fuel return correct?

the 90* fitting is the "in" for the FMU. If you suspect a bad FMU then bypass the 2 fuel hoses and take it out of the picture to see if it runs better.

Edit: Kyle give me a call monday. your FCD should be there monday also, if not already. We'll get it straightened out. PMed with number.
Terry

I edited to the wiki!

no you dont run a return line if you follow the instructions. the instructions tell you to place the FMu in the rear. That is why whodatt stated that.

Terry