Exactly. Also, tried on a dyno, couple of runs in 5th gear and it did same thing. A few times hits max. 18, and then next run over 30. I do however turn off the engine in between if that matters.

 

Was given a list when I received my cable with some highlighted in yellow as bare minimum. I checked off all that was on there. More info the better.

 

This is a great thread for info!

I have one question regarding idle and stalling. I got a HKS supercharger and I'm having a problem with stalling. After start up I sometimes need to tap the gas to keep it alive. Same thing can happen if rev the engine and let the revs drop quickly.

I raised my idle from 650 to 750 rpm. That helped a little, but it still didn't solve the issue. Any tips what can I do besides bumping the idle?

 

add more fuel or timing to cells in high vaccum

 

My timing is in vacuum is the same as with base NA map. I tried that prior to my supercharger install and I did not stall once. I'm a bit afraid to bump the timing beyond that. The HKS SC intake design is not perfect, but I still think the issue is related to the tune. Now I have bigger injectors. Latency is adjusted and minimum pulse width halved (dw600).

I don't quite get how I can add fuel in vacuum. Should I add fuel to MAF after logging the values or the vacuum cells in fuel table. Currently my fuel table is flat 100. And all adjustments is done with MAF-table. Shouldn't the short term correction put it close to 14.7 anyway?

Another problem that I just noticed is jerking/bucking with low revs (under 2500 rpm) and low load.

 

i know the vortech guys recommend idle of 900 - 1000rpm

question- how do you get injector timing ? i picked up a set of OEM R35 570cc injectors. i searched the net a bit and couldn't find much.

 

I might try raising the idle that high. Although I'm kind of used to it an know how to keep it from stalling. Feels stupid to idle at 1000 rpm. The light flywheel might not help.

I remember reading from somwhere that you can get the r35 injector latency from the uprev software. Just ask some the base file of R35 and copy from there.

First google result brought this one up.
https://my350z.com/forum/9823379-post56.html

 

per Jared @ uprev
Stock GTR ROM has:
Injector minimum: 1.83ms
Latency 14V offset: 1.78ms (HEX - 59)
Latency slope: -0.18ms (HEX - 5C)

 

Yup. I posted them on the previous page a few months ago (post#342). I just used the uprev downloader to grab a stock GTR rom for the values. Worked perfectly. I'll see if I can grab the crank enrichment numbers I'm using as well. The GTR numbers don't work as well for those..

 

any luck with those crank enrichment numbers?

also when running a return fuel system what fuel pressure is best to run? stock 51? and use the 1:1 riser?

 

Here's the crank enrich numbers I'm running:


Starts up perfectly. I didn't touch cranking timing.

 

How exactly do you rescale the coolant temp? mine goes from -40 to 100 if i remember correctly, I was going to try out your set up to see if that would help me ...... bare with me I just got the cable the other day
I have GTR injectors, returnless system with GSS342

 

Sounds like you have the scales set to Celcius? You can change that in the options.

 

I realized that after I asked the question, I felt like an idiot after lol

 

Blame it on the cold medicine. That's what I do

 

How do you guys know your injector duty cycle?

 

Thats a good question, thats something I'd like to know too but I don't think uprev has a monitor for IDC

 

Click on the option that says duty cycle....

 

Only thing i can find on here is "O2 Sensor heater duty cycle" i cant find anything for injector duty cycle

 

I just calculated it manually. Didn't know there was an option.

It's just [max pulse width in seconds]/[1/(rpm/120)]