Yeah, I REALLY don't want to go with the JWT route. B/c they send you an ECU and you're stuck with that programming. What happens if you need to race your car on a hot day or with hot coolant temps? With the normal JWT program and 93 octane, you will be pinging like crazy! Or what about if you have a nice 40 degree day and have race fuel in your car, it won't make a difference unless you have the Zemulator to bump up timing in the certain areas that you can afford to.

Plus, I didn't want to spend $600 on an ECU and have to wait several months. I'd rather spend that same money on the Zemulator.

 

My hats off to you man...way to go~!

Buy a 5th gen next....LOL!

 

Thanks a lot man. I am going to milk this VE thing for as long as I possibly can. I will be sure to keep everybody updated on this Zemulator thing. Once I get it working with the VE ECU, I will let everybody know.

I've never cracked open a 4th gen's ECU. But I bet this technology could easily work also. It would take someone that is really serious about custom tuning their ECU. And plus, it wouldn't hurt if you were near the Daytona Beach, FL area since that is where Ash lives now. Not Atlanta anymore. He left z1motorsports in ATL and took the Zemulator rights with him. But for me, I was able to do all this stuff on the opposite side of the nation as Ash.

 

now that you're closer to him the VE Zemulator should be developed alot sooner, no?

 

Well, not any sooner than if I was still 2600 miles away from him. I am about 3 hours south of him right now. But I still need to wait until he gets his crap moved in his new place in FL. I am going to call him in the next 10 days to see how his move is going. I can solder this daughterboard myself, but I'd rather have him do it. I probably need to come up with $150 to pay for this new daughterboard that I need to add.

But, with him being in FL, it might make some things go faster. I know that I will meet him one day. We might get together and do some dyno tuning on my car. Who knows! But, I am really motivated to get this working.

 

excellent. as soon as its availible, i'm buying it

 

Ok guys. I'm needing some help here. My A/F ratio has been around 14's and 15s at points and comes down as i get to higher rpm range. How much do u believe i could gain from getting a safc-II or something similar. Sorry this is kinda of a noob question as I have never messed with the a/f ratio much on a car. This is new to me

 

Damn dude that is way lean... what kinda wideband have you been using ? Tailpipe sniffer ?

 

You have a 2K2 w/mods...they do that.

Only fix is TS ECU(may take a few tries), eManage, or at least a Walbro.

Best fix 350Z guys have found is to run a return line and FPR.

 

First off, do you have a filter on the crankcase vent or is it connected correctly behind the MAF? Second, your Injen could easily have caused this problem. Anytime you change anything at all on the intake, in front of OR behind the MAF, you will disturb it's accuracy. Anyone that puts on an aftermarket intake on these specific vehicles needs to have a backup tuning option. Any by any chance is your leanest spot at 5200 rpm ?

 

The stock FP is good for upto a 125 wet shot. So unless he needs more fuel than that I wouldn't bother with the Walbro. And it will take a few tries with the TS ECU unless you send them your AF chart and NEVER touch your intake setup again.

 

I agree, but as a "bandaid fix", the 350Z guys have installed ONLY the Walbro and it overpowers the bypass valve increasing fuel pressure to ~60psi IIRC.

Just a simple way to kill two birds with one stone, ie make sure there is adequate volume and provide a little additional pressure.

 

I don't understand why the Walbro increases their fuel pressure. I have the Walbro 255HP and my base FP didn't move at all.

 

That is weird......

 

What the heck are you talking about, I have had the JWT ECU and Nitrous Control Module Circuit Board for about 2 years. I have never had any problems with my JWT ECU or Nitrous Control Module. Down in nice warm Texas, I've seen the thermometer hit well over a 100 F and yet to hear and pinging. Furthermore, I have even pumped 91 octane and hot summer day and I still hear no knocking.

 

If the ambient temp is above 100 degrees and your coolant temp is above 210 degrees, the VE will definitely ping with the normal JWT program. But you have a knock sensor that does a great job in retarding the timing at the right time. I am very sure your car has experienced detonation in hot weather with hot coolant temps. You just will never hear it unless you have disabled the closed loop ignition timing or have disabled or bypassed your knock sensor.

 

His base timing is probably retarded, if he where to advance it... ping ping ping JWT sucks.

 

Just another data point. I have never detected any detonation boosting to 12 psi on a hot day, non-intercooled, heat soaked engine. That is exactly what I was looking for when I went with the JWT ecu and I am very happy with it. To me, JWT definitely does not suck.

Maybe I could make more power if I advanced the timing a bit. Trouble is you make the most power just before the engine burns up. I'd rather have something tried and true and reliable for my daily driver. It's a trade-off I'm willing to make.

 

The stock ECU is always aiming for optimal timing. When the air and coolant get hot enough, knocking will occur on ANY engine, JWT equipped or not.

JWT rock, and does who have it can concurr, those who dont' will only speak of who inferior the product is.

Don't hate because you don't have anyone that can upgrade your ecu.

 

Hate ? I have a 93 G20 w/ SR20DET swap, T4 turbo, equal lenght custom manifold I build, and I run stock DE ECU on it with piggy backs. JWT makes a ECU for my car, but I don't see myself spending 600 bux on a ECU and waiting 2 months for it, and being stuck with what they think is right. My friend runs 10:1 A/F on his JWT tunned ECU. I had a JWT ECU on my 93 SE-R which was NA, it worked nicely, I had that same ECU programmed for 555cc injectors and Z32 MAF- this was bout 6 years ago... I think I know what I'm sayn here. If you can't tune then you get JWT. 6 years ago, there where no piggy backs, and HKS F-con was nearly unattainable for me. JUN used to charge 900 bux for a ECU tune, and it included dyno time and everything. But they are no longer here in US.


(Profanity edited out by me. See how you sound more intelligent without it? - SM)