Update:

My car idles now at 600rpm, but its to low as when I drive the car will stall sometimes. So I have to fix that. But I may have found out the issue. Well the solution but yah.

So here it is.

At around 2k, in 2nd gear if I slightly tap on the gas pedal quickly (probably 20% pedal) the car will start to stutter and sometimes my J&S will light up. So I decided to add some timing around that area. This helped, I still had the slight hiccup and what not but it was smoother. The J&S was still lighting up when I added more timing so I believe I can monitor individual "retard" by the J&S and then tweak it via the Emanage as I can pull out an individual advance/retard timing map on the Emanage.

Hope this helps somewhat, will report back tonight!

 

I have a J&S which instead of having the senstivity set to Min it was set to Max.

Sensitivity Adjust: Now you are ready for your test drive. A common mistake is to set the sensitivity control to maximum. This will usually cause the unit to over-retard due to engine noise. We recommend setting it to mid-range and getting the car up to highway cruising speed.

I'm such a tool!!! I never thought I set this wrong as I was having kinda the same issue last year where it was spark blowout form the supercharger or meth killing the spark. So I never trully fixed the spark blowout then installed the J&S. So the issue was masking the J&S incorrect setting (in my mind anyways). Well today I tried some thign with timing and figured I should recheck my J&S. Well what do you know it was at MAX setting. Man I'm so dumb it's funny.. I went to test the car and I didn't get it to hesitate at all , well I lied it super slightly hesitates but I'm picky!

Going to the track this weekend and going to keep trying to make it hesitate on my way home tonight. I think the issue is resolved. Now just gotta up the idle as it stals ahahha.



It kinda clicked in, like why is the J&S lighting up at 2k, doesn't make sense!!!

Thanks Guys for sticking in with this dummy...

 

Lol, Nice man

I need to install my J&S one of these days.

 

I'm scared to have mine activate!

 

I retract my previous statements, I still have the issue. Back to square one. I'll put 470k ohm resistor in tomorrow instead of the knock sensor and see if this helps any. The J&S gauge ain't lighting up though...On the bright side, I can finally tune via Duration lol.. Ohh car, why do you do this to me!

 

Hey Kevlo,

Do you remember you sparkplug gap? If mine is to small could this affect me?

 

I have the coil booster thing and I am at .036/.037. This is a small gap for me since i have the booster at 16v, but no spark blow outs for me. If I ever have to take the plugs out again, I will run um at .039

 

Alright thanks Kevlo.

update:

I unplugged my emanage. Know you would think my car would run pig rich with the 600cc injectors? Nope. The car doesn't hesitate anymore (well very little in 5th gear with a quick press on the peddle doing 80km/h which is normal). My A/F at cruise jumps from high 13's to low 15's and in between. My WOT is 9.8-10.2. WTF!!!. WTF was the Emanage even ****ing doing. WTF! My ecu must have learned the tune?!

I've done a few WOT runs and there isn't anything out of the norm. It's running good. I'll admit the top end could lean out but damn... I just have to refix the damn idle and thats it. No Emanage in the system.

Maybe i'll do a tape trick for the MAF lol...

Losing my mind...

 

You sure the EU is wired in properly? Maybe the unit is bad?

 

it's wired in properly. And it works as I have tuned before without o2's and I was able to control the injectors and what not. Without the Emanage the car sometimes floods, Also when shifting it goes down to the 11's then goes back up to low 14's etc. I was fiddling around with the car on my way to work. It hesistates in 5th gear under 2500rpm. But 2nd gear doesn't do this anymore.

 

How is your maf? When my maf was bad the car would go pig rich sometimes. Maybe tune the eu by maf?

 

If possible log the maf voltage. If the maf is reading maxed out, injectors will be all the way open. The maf may be bad that's why I said check the voltage.

 

MAF is not bad, i've checked countless times. It read properly. Also the injectors never get maxed out. I'm running without the emanage and I don't hesitate in 2nd gear which was the most pronounced. I'm going to do a tape mod to my MAF and see if this leans out in the top end a little. I'm also heading to the quater mile tomorrow so if the car does like 3+ consequtive runs where it doesn't buck like my other runs then I know for sure the emanage didn't like something, either tune or something.

But I can't tell you, trully am stumped. I'll keep you posted on my tape mod lol. It ghetto but it's all I got left in me...

 

I tuned the EU by MAF, my Greddy pressure sensor. Tried duty cycle and duration. Yelled at it, cried, made love to it? I have tried everything and then some.

If the MAF was bad then why would it only be affected by the EU and not when I just plug in the ECU by itself? I'd agree if I had the same issue whether it was EU and ECU or ECU by itself.

 

wow, the funny thing is i have the exact opposite problem as you, i cant richen my AFR in high rpms no matter what.

anyways, i did a search and found someone on another forum with similar issues about not being able to lean his injectors at high rpms (they were DW 1000s). someone suggested that he play with scaling so that the target AFR was achieved at high rpms, and work his way backwards with tuning. He had success.

 

The A/F was an issue at the higher range but at 2-2.5k the car would hesitate when tapping on the gas at around 20%. So current setup for tuning.

Z32 MAF with tape
Stock ECU
DW 600cc injectors
Aeromotive AFPR set at base pressure 1:1 with boost

With the tape on the Z32 we now get 10.8 and it touched 11 A/F in 2nd gear and 3rd gear! It's very consistent. Tomorrow i'll add a bit more tape to dial in the 11.5 ROFL. Also my cruise is high 13's to high 14's, little more tape should help there aswell ehehhe.

Props to grey99max

I'll take a picture of the Z32 with the tape inside 1/4 mile times tomorrow

 

oh wow, so youre not gonna use any tuning device, or dont need it anymore? neat.

i would like to see a pic tho actually, curious to see how you have this tape so that it doesnt fly into the engine. haha

 

That's how I have my setup running.

600cc DW's
Z32 MAF (un-taped)
1:1 AFPR
Stock ECU

I do have a VAFC, but to be honest, it doesn't do crap as far as adding fuel (i've tried adding upwards of 75% and nothing doing). I might have the opposite problem and just need to up my base fuel pressure and just deal with it being a bit rich and maybe lean out the mid-range.

 

If the tape fly's in its no biggie, it's such a small piece that the motor would eat it up without any problems.

I believe the VAFC can only lean out the injectors. It's the same principle as the MAF tape in which it fools your ECU in thinking it's seeing less air so it doesn't spray as much fuel. Bamboomerang mentioned this when I was chatting with him yesterday which totally makes sense to me.

Pics to come!

 

Went to the track. The car ran great, no issues at all. A/F dialed in at 10.8-11.1 as it reaches redline. Can't complain with tape!!! Will post times, slips, and pics of the z32 with tape