: Nosense Timing and IAT Readings

03-11-06, 05:03 PM
My Maggie V from MP seems to have a poor throttle response. I took some log files with EFILive. I noticed the intake air temperature drops to an extreme negative temperature when I open the throttle. At the same time the spark advance is turned back even to negative values.

I don't understand this. Does this make sense to anyone? Any suggestions? Thanks.

03-11-06, 05:58 PM
Which PID's are you using to monitor the two items?

Negative IAT's - wow - that would be cool. Check the harness going into the MAF sensor and see if they relocated the IAT wires to the rear passenger side of the Maggie.

As to timing, are you referencing burst knock or some other spark retard possibly?

Something seems amiss...negative IAT's are GOOD (but seemingly impossible?).