Nistune Forums

ok i think i finally have all my stupid bugs worked out. Idling at 7-725rpm with afrs bouncing around 14.7. It is really nice to finally see the k constant working!!!

side note: I replaced my coolant temp sensor just now and still have same issue (I didnt think that would be it, but thought i should do it anyway). all other codes are due to this being an auto ecu and me having swapped in a manual trans. all trans plus are disconnected

Ok I found the FTS/FTL graphs and they are at 0% during the surging idle. Here is a video of what its doing.

Ya my maf wasnt reading anything, now it does. What are FTS/FTL? When you say TP Scale, are you referring to the Fuel load scale? Sorry I am a complete noob at tuning. Id rather get my car running before sending the ecu back in for an update if at all possible.

Ok ive called it a night. I re-tuned from a stock map, still surging. I notice that the injectors are pulsing with the surge if I watch the bar graph in nistune. Any ideas?

well I just fixed another issue, apparently my maf was wired wrong now it is a surging idle and super lean, im guessing is should probably add some back to the k constant?

OK i did just run all the updates and installed the new version. I am out fiddling with my car now. I can now start it everytime and get it to idle on the 810cc injectors finally :shock: Now onto the issue. I am super rich (afr reads 10, Pretty sure thats as low as my gauge goes) and idle around 850...

Thanks for all the help, after a bunch of crap happened (motor got pulled and completely gone through, then put back together) I finally have the car running!!! The maf was indeed part of the problem, replaced it and im running so much better. I will also be moving maf to blow through setup like 8-b...

Well after exhausting ever resource i am unable to find a new MAF in town so I ordered one the other day, should be here by the end of the week, along with a new red top. Will update once i get the new MAF installed. Thanks again for all the help!!

Pretty sure your maf or wiring is stuffed. If the engine is off there is no air flow so voltage should be minimal. Google says around 0.2V I appreciate the .2v, i have searched trying to find what the maf should be at but couldnt find anything. Just to be clear, that 3.130 was a reading I pulled fr...

I will check it idling, thats what I was getting with the ignition on but the car off. I kinda hope the maf is toast, that would explain some of my issues

Ok been a long time on this, I am still working on it though =/. I am wondering if anyone can tell me what the maf should be reading at with just the ignition on? Right now it shows 3.130 in nistune with the car not running.

Latency should adjust your injection time... Are you seeing that increase? What are your idle AFRs at the moment? At idle my AFRs are at 10 and hold there. I tried decreasing the latency per your advice above... but it made no difference, still 10 AFR. I will try adjusting the VE tables today. I re...

Alright! good news! timing is right now. Thanks Matt! Now I am rich, sitting at 10 afr. I tried decreasing the injection latency but it made no difference. Im idling really low, around 450-500. Any ideas? I'm going to try and adjust my iacv see where that gets me.

OK awesome, Ya i was reading through the pdf yesterday and found that in the text, I didnt quite understand how that matched it up but I also didnt realize it would hold the ecu at 15 until you were done. Thanks a bunch Matt!! The timing light i borrowed yesterday was broken or something, Ill give i...