Timing retard through IAT, EFILIVE
#1
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I posted this on the efilive forum, but that forum is dead in comparison to tech, so here goes.
I have the iat relay/resistor trick done to try to pull timing when spraying, and by looking at the logs, my iat jumps to 178deg as soon as the noids open, but I get no timing retard??? My timing stays right where the high octance table says, and I can't figure out why?????
Here is the log, and related screen shots from my tune.
Does anyone have any ideas?
BTW, this is an 05 GTO
TIA,
Vinny
![](http://i54.photobucket.com/albums/g102/860performance/iatmultiplier.jpg)
![](http://i54.photobucket.com/albums/g102/860performance/iattable.jpg)
![](http://i54.photobucket.com/albums/g102/860performance/iatvsect.jpg)
I have the iat relay/resistor trick done to try to pull timing when spraying, and by looking at the logs, my iat jumps to 178deg as soon as the noids open, but I get no timing retard??? My timing stays right where the high octance table says, and I can't figure out why?????
Here is the log, and related screen shots from my tune.
Does anyone have any ideas?
BTW, this is an 05 GTO
TIA,
Vinny
![](http://i54.photobucket.com/albums/g102/860performance/iatmultiplier.jpg)
![](http://i54.photobucket.com/albums/g102/860performance/iattable.jpg)
![](http://i54.photobucket.com/albums/g102/860performance/iatvsect.jpg)
![](http://i54.photobucket.com/albums/g102/860performance/drylog.jpg)
#5
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The 111 is just where the "line was" which wasn't even on the screen when I hit "print screen", but you can see where the IAT bumps up to 178deg, and the timing dosen't move at all.
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Check the multipliers that are tied to IAT Spark reduction. There should be one based on (A) RPM and another based on (B) ECT. I believe the way it works is:
Commanded Timing + (Multiplier A x Multiplier B x Spark IAT table) = Delivered timing
So, if any of those multipliers are 0, then no change will be made to delivered timing.
Commanded Timing + (Multiplier A x Multiplier B x Spark IAT table) = Delivered timing
So, if any of those multipliers are 0, then no change will be made to delivered timing.