Thread: Negative timing spikes

Sorry for the late responces I was recently recovering from a banning. I will see if I can get some data logs and post them up another time that way we can really get down to bussiness. Its just hard to explain because I still new to all this. I did noticed it reached near 40 degrees on some parts though Vadim.


Nissan Data Scan homie. I talked to zcarjase over at data scan and he told me I may get those spikes if I was feathering the gas( which I was) so I want to get some full throttle runs first befoe posting the logs. Just so hard with all these dam cops around to log a couple good runs.

40* timing is normal, there are a few places on the map that it will hit that.

Main up stream o2 sensor can affect timing in this way too. May be the problem I am having myself right now. Yeah umm anyway I used to have this issue where the car would just start slowing down with no change by me from the peddle. Turns out the slim fans still hit my main upstream o2 sensor wires and was causing the power wire to send 14 v back up the signal wire into the ECU. This to the ECU mean retard timing like crazy when it is used to seeing a max of 1 V. Check your O2 over well.

Did you find a solution to this?