F/S NepTune RTP/Demon P28 PWM
I have a NepTune RTP with a new Moates Demon and PWM components, installed in a P28.




I didnt test the P28 before I installed it. Everything works great, but for some reason, I cant get the CEL to come on along with the fuel pump prime, ONLY WHEN THE LAPTOP IS CONNECTED. If I disconnect the USB from the laptop, everything primes, and the car fires up just fine. I have no idea why the ECU is doing this. I have tested the Demon board in another ECU, just to make sure it wasnt the Demon.
The Demon has zero miles. Only used to make sure the car starts, and uploads and downloads calibrations, in another ECU. Pretty much brand new, bought only a few months ago.
I am asking 400 plus shipping for this. I will throw in an OBD1 P06, virgin (minus auto to manual conversion), for 25 bucks, if you want it to swap the Demon into.
I am located in Denver, Colorado.
Please bump if viewed.
Thanks for looking!
Curtis




I didnt test the P28 before I installed it. Everything works great, but for some reason, I cant get the CEL to come on along with the fuel pump prime, ONLY WHEN THE LAPTOP IS CONNECTED. If I disconnect the USB from the laptop, everything primes, and the car fires up just fine. I have no idea why the ECU is doing this. I have tested the Demon board in another ECU, just to make sure it wasnt the Demon.
The Demon has zero miles. Only used to make sure the car starts, and uploads and downloads calibrations, in another ECU. Pretty much brand new, bought only a few months ago.
I am asking 400 plus shipping for this. I will throw in an OBD1 P06, virgin (minus auto to manual conversion), for 25 bucks, if you want it to swap the Demon into.
I am located in Denver, Colorado.
Please bump if viewed.
Thanks for looking!
Curtis
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