Freshly built ka-t running pig rich

[rlvq35de]

Maf wiring is good,
Modified by rlvq35de at 9:12 AM 2/2/2009

[turbo2nr]

i think the afc cannot handle such big injectors to big of a corrections you may need some 555cc at lagest or better engine managment.

[rlvq35de]

Should the MAF be grounded to chasis?
Modified by rlvq35de at 9:13 AM 2/2/2009

[Blown240sx]

Sounds to me you ripped some O rings our your tune is horrible.

Or how far is your MAF from the turbo inlet and are there any bends in the intake pipe? 18 inch minimum for straighter pipe or hard bends to help break up turbo turbulance that effects the MAF readings.My SR did the same thing when I went to a top mount. I thought it was the tune but turned out the MAF was just to close to the Turbo inlet.

[rlvq35de]

These are what I did according to turbo240 instructions for fuel system


Modified by rlvq35de at 9:15 AM 2/2/2009

[Florida240sx]

Never heard of that before.... call them to make sure..... Maybe one of factory rubber gourments is bad or a piece of sand is there...can't be metal on metal contact if a piece of sand is in the way...Your systems are tore o-ring.... your timing is good.....I controlled my 555cc injectors with my safc..What is your jwt tuned for mafs? What is your setting on your safc neo??? If your ecu is tuned for the mafs then the safc should have 2 same numbers like 5/5 3/3 not 2/5

[rlvq35de]

neo is at 5 in 5 out grommets are brand newjwt tuned for z32 maf

[Blown240sx]

Im going with Bad Tune or Maf too close.

I didnt realize you went to top feed.

[wild_maxx]

neo is at 5 in 5 out grommets are brand newjwt tuned for z32 maf

If your ecu is already tuned for that maf then you wouldn't need to change the in out settings to 5-5 right?

[rlvq35de]

i dont know, would it be 0in 0out. Is that possible?

[Florida240sx]

For an ecu tuned or stock maf settings need to be same # There has to be something in the way not letting the injectors seat corretly....

[rlvq35de]

so injectors, I will double check tomorrow. Put two sets in, both the same. And how do i find out the in out settings?

[eazye2000]

neo is at 5 in 5 out grommets are brand newjwt tuned for z32 maf

I'm not 100% sure on the Neo, but my SAFC-II is 2 in for the Z32 MAF. And if your ECU is already tuned for a Z32 MAF, you need to put it back on a number 2 out.

So 2 in , and 2 out. Unless someone else has something to add.

Try that for the sh|tz & giggles. I ran my SAFC with all kinds of in's and outs with my Z32 MAF trying to find the numbers myself because noone would help me and my car just idled/stumbled/got p|ssed at me.

[NateDogg]

I bet your MAF wiring is wrong. Voltage should be .9-1V with key 'ON', engine off.

[myRed240]

Yes, definitely double check the MAF wiring. Make sure that one ground goes to ECU and the other to chassis ground. I could not get my car to run right until I took one of the two grounds from the ecu and put it to chassis ground.

As for the wiring, everything is color matched, except the orange wire goes to chassis ground.

[DammitBobby]

I am running JWT 72lbs program and SAFCII. My settings are 5in 5out. That should work with no problems. The only time I had problems adjusting my fuel is when I had vacuum line left open. I rebuilt my motor with AMS basic rebuild kit with ARP hardware. I have to add 20% fuel at idle to get mine to read around 15/1 AFR.

[S13FX]

Dang 20% extra just to get it to idle at the proper afr. To me it looks like you have a very ****tty tune my friend. But like someone said play with your In Out Settings.

Because I was running a Self chipped ecu with an safc. I know I had really good fuel maps since I made them my self. But anything before 2600 the car would run like total crap.

I totally forgot that one night I screwed with my in out setting. So one morning on the way to work, I came up to a stop sign and it hit me I changed them and the car ran smoother then anything I have ever driven before in my life.

[WDRacing]

First things first, troubleshooting this should be straight forward. Simply start removing things until it works fine. If nothing changes it isn't that part.

With the JWT tune you don't need the SAFC, so remove it and redue the wiring. Verify the MAF wiring and have one ground to the chassis and one ground to the ECU.

The injectors ARE NOT gonna leak like a sidefeed. Top feed injectors are either good or bad. If they fail open, then the piss fuel 100% of the time. I doubt this is the issue unless you fried one. But usually its the ECU that has the problem.

Swap out your plugs after you remove the SAFC. They are ruined by now and will definitly give you troubles. With the SAFC removed and the MAF checked and the plugs swapped out, things should work just like stock.

WD

[rlvq35de]

Rewired, now runns like a kitten.


Modified by rlvq35de at 9:15 AM 2/2/2009

[rlvq35de]

i Have to add 26 value in fuel to idle at correct afr 14.5 at idle

[9sec240]

i Have to add 26 value in fuel to idle at correct afr 14.5 at idle

Which injectors do you have in now? What is your fuel pressure set at?

Glad you got it figured out.

[nissanfanatic]

Is this a S13 or S14 ECU/KA? The S13 tends to like 6in-6out whereas the S14 tends to like 5in-5out.

But take that with a grain of salt as these cars tend to like whatever they like..

Adding fuel at idle is normal. I have to do that on my tune..

[9sec240]

Keep in mind that he is running a Z32 MAF in the setup. The JWT computer is programed to accept that signal.

[rlvq35de]

I Am 5in 5 out for neo. I have the JWT 72lb msd injectors in. I still have the PT 75lbers, not sure what to do there.

Took it for a spin, HOLT F*** that GT32 spools fast and HARD. Scared the sh** outta me, i was boosting like 12-15 lbs, gotta get someone in the car with me to gets this boost controler right. Its stalls when letting off. I am gonna hook this IACV in, i have the remote mount, just no fitting on the cold pipe. And the BOV is a JGS with anti stall, but not helping. I havent adjusted tps yet.

Ivan, Fuel pressure is 34ish at idle 43-44 with vacuum off, it was low, I just set it at that.

Now feul correction is only 22 at idle.

[rlvq35de]

Ivan

What does that Mitsubishi resitor pack bring the injector resistance value to? JWT is warning me not to run the car with it cause i will burn our the injector drivers. I dont believe that.

Correct me if im wrong, unplug ecu harness, unplug injector to test, and see if the resitance is 10-14 ohms?

It seems to be running fine without JWT 10 resistors.

[9sec240]

Ivan, Fuel pressure is 34ish at idle 43-44 with vacuum off, it was low, I just set it at that.

Now feul correction is only 22 at idle.

Fix any vacuum leaks you might have then adjust the fuel pressure to get your idle AFR. Use your SAFC to tune your drivability and WOT.

[9sec240]

Ivan

What does that Mitsubishi resitor pack bring the injector resistance value to? JWT is warning me not to run the car with it cause i will burn our the injector drivers. I dont believe that.

Correct me if im wrong, unplug ecu harness, unplug injector to test, and see if the resitance is 10-14 ohms?

It seems to be running fine without JWT 10 resistors.

The resistor pack adds 6 ohms of resistance to what the injector has. You should have 8 ohms with our 75 lb injector inline.

Too low of resistance and you chance burning up injector drivers. Within reason, higher than requested resistance has no effect.

You will be fine with our 75 lb injectors and the mitsu resistor pack.

[rlvq35de]

Fix any vacuum leaks you might have then adjust the fuel pressure to get your idle AFR. Use your SAFC to tune your drivability and WOT.

vacuum seems good. 22hg? at idle

Is it safe to go above the 43.5 to get the idle afr in spec without safc correction?Even tho the tune is for 43.5lbs

I will chk resistance to make sure im withing JWT specs 10-14 with the msd injectors. Im using the 72lbers since that is what the base tune is for esp since im new to tuning.

[rlvq35de]

what is best afr for WOT while i got ya

Thanks for everyones help.

[myRed240]

I believe it's ~11-11.5 at WOT. How are you liking the NEO? I might pick one up to fine tune my Enthalpy tune....

Oh yeah, hang on once that GT32 spools up! I remember the first time I hit boost with it-- scared the bejeesus outta me