L99 idle diagnostics
Thread Starter
Staging Lane
Joined: Jun 2010
Posts: 78
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From: I'm a Moderator
L99 idle diagnostics Is something wrong with these numbers at idle?
Full bolt on and JRE tune.
Long Term Fuel Trim 1: -15 to -13
Long Term Fuel Trim 2: -12.5 to -12
MAF Sensor: 8-8.5
Spark Advance: 9-16
Total Knock Retard: 0
MAF Sensor: 6-7 g/s
Intake manifold: 30-33kpa
Little info on the L99 in this aspect so maybe some of you more experienced guys can comment...
Full bolt on and JRE tune.
Long Term Fuel Trim 1: -15 to -13
Long Term Fuel Trim 2: -12.5 to -12
MAF Sensor: 8-8.5
Spark Advance: 9-16
Total Knock Retard: 0
MAF Sensor: 6-7 g/s
Intake manifold: 30-33kpa
Little info on the L99 in this aspect so maybe some of you more experienced guys can comment...
I don't really know L99's, but why are there two MAF numbers? Is the first really Dynamic Air?
I don't imagine it is normal to have trims that negative at idle. Did they change the MAF scale or VE?
I don't imagine it is normal to have trims that negative at idle. Did they change the MAF scale or VE?
