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I've got an '86 na2t. Runs fine with my stock '86t ecu, and ran fine on my '86NA ecu before getting it nistuned. The nistune'd ecu is part number 18P03.
Now if I try to start the car with the nistuned '86na ecu, it may start sometimes but it won't idle and seems to run too rich to stay running, if I race the engine I can barely keep it running. Runs fine again after putting the stock '86t ecu back in and clear out the fouled plugs.
The car has no EGR, Idle control/IACV etc, only one line for boost sensor and one line for fpr, and there doesn't seem to be any leaks. CHTS and subharness are new. Cleaned the MAF. Not running any o2 sensor.
I've tried applying the stock '86 tune from the rom pack and that didn't seem to change anything. I think I'm then supposed to resize the injectors via the k constant but that didn't seem to affect the behavior, and may be moot since the car at least ran on the stock 86na ecu / tune...? I've gone over the manual too many times and I'm pretty stuck here.
I tried recording the nistune log when trying to start it and race the engine, then it dies and I try a few more times. Hope this helps. https://drive.google.com/file/d/1ieI...ew?usp=sharing
If you have a tune worth trying for me to share, I'm running stock maf and injectors at the moment. Just trying to make sure this is all working right before I get it to a shop for real tuning
(waiting on account approval over at the nistune forums)
Thanks guys and gals
Now if I try to start the car with the nistuned '86na ecu, it may start sometimes but it won't idle and seems to run too rich to stay running, if I race the engine I can barely keep it running. Runs fine again after putting the stock '86t ecu back in and clear out the fouled plugs.
The car has no EGR, Idle control/IACV etc, only one line for boost sensor and one line for fpr, and there doesn't seem to be any leaks. CHTS and subharness are new. Cleaned the MAF. Not running any o2 sensor.
I've tried applying the stock '86 tune from the rom pack and that didn't seem to change anything. I think I'm then supposed to resize the injectors via the k constant but that didn't seem to affect the behavior, and may be moot since the car at least ran on the stock 86na ecu / tune...? I've gone over the manual too many times and I'm pretty stuck here.
I tried recording the nistune log when trying to start it and race the engine, then it dies and I try a few more times. Hope this helps. https://drive.google.com/file/d/1ieI...ew?usp=sharing
If you have a tune worth trying for me to share, I'm running stock maf and injectors at the moment. Just trying to make sure this is all working right before I get it to a shop for real tuning
(waiting on account approval over at the nistune forums)
Thanks guys and gals
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