TunerPro User Forum

The final settings for my Nissan 1990 300ZX TT with some JESC 550cc Injectors (new style) that were flowing between 580-632cc depending on the fuel pressure. Runs and idles great. KValue = 179 Latency = .81 RPM Range=400,800,1200,1600,2000,2400,2500,3200,3600,4000...6800 TTP Min = 6,6,6,5,5,5,4...4 ...

I realized the idle was leaning out and just was able to sustain 650 RPM with K-value of 176. It sounded lumpy, low idle and the idle varied a bit. So, I increased the K-Value to 180 and the Latency to 83 knowing it might be too much. Now, I have a strong and stable idle. On reving it while cold it ...

Passed test today, so not rich. Will put on wide band O2 soon to see if a bit lean. Pulls strong, idle seems low at about 650 sometimes.

I tried this today and idle was rough. I put it back to Kvalue = 176 and Latency = 77. Seems a bit lean on idle, but close. I'm getting emission test on Saturday and see how it goes.

I've had numerous bad ECU chips made for me from just general guidance on some injectors I had installed in a Nissan 300ZX TT. Basically, each of these were incredibly on the RICH side (by design and of course fails emission testing). Typically, the purchased chips are coming to me at KValue = 195 a...