Nistune Forums

Well, I've finally got some time to work on this some more this weekend. I'm going to try burning the rom to a 27c256 and running with out the nistune board. If that doesn't solve it I'll do some more head scratching and see if I can't find other potential causes. After that I guess I'll have to go ...

At first I thought my rich under load issue was FPR related too so I added the aeromotive fpr. During these lean conditions the fuel pressure doesn't change. The ecu shows the unusually low injector open time. I also thought I had a sticky idle control valve so I took it apart and cleaned it then la...

It does indeed appear to be jumping to the knock maps. I don't have the logs on hand but it doesn't get as rich now. Thanks for cleaning up the fuel maps they were pretty bad. Unfortunately a whole other problem as re-developed again and its left me completely demoralized. My car is eating ECU's it ...

Here's the new log file. I haven't changed anything since the last run.

I pulled out the harness and went through the whole thing (fixed grounds, and removed unused wires). Everything measures out to within .1 ohms. The car runs exactly the same as is did before. Also the pin 47 issue was due to a sudden drop in IQ. Any other ideas?

I guess that does seem a bit low. I'm only seeing .5-2 ohms on the ecu grounds so that seems ok. I did find something odd however, one of the three power pins (pin 47) was measuring 1.2 volts. Also, imposed a max pulse width of 16ms and it still went up to 20ms+ in 4th gear.

Hi Matt, Here's the log and rom. I couldn't get my serial adapter to play with my laptop so I couldn't get logged AFR's. However when the injection time goes off the chart so do the AFR's (9:1). Nothing else logged seemed to explain why this is happening. I'm going to set the max pulse width inline ...

Hi Matt, I'll get you the logs and rom soon. I also figured out how to make cell values negative :D. Is it normal to have it wrap around to negative values after 127? The tune is a bunch better now, however in 4th gear afr's still dump to 9:1 whilst on the same group of cells in the previous gears (...

Hi Guys, I'm having a puzzling issue. After about 9psi my AFR's go from 11.8 to 10.8 and then around 11-12 psi they drop to ~9:1. The ecu isn't tracing over cells that would cause this change. I even tried leaning out my high load columns to the same values as the low load ones. The engine isn't kno...

Never mind on the rom. I got it close enough for now. Gona get it tuned and post the rom up.

Hi Guys, I've finish building up my first iteration of a ka24e-t and was wondering if someone had a rom for a similar setup that I could start from to save me some time. Here's what I have, Stock KA24E ARP studs 550cc rx7 tubo 2 injectors stock maf (I have a z32) .6 bar W/G T3/4 (China's best Turbo)...