Power FC Idle Fuel Map help?
06-25-11, 08:42 PM
#1
Idle Fuel Map help?
I was tuning the idle area of my fuel map today using an LC-1 and Datalogit, and I found that I needed to drastically reduce the numbers on the chart to see much improvement in my AFR. For the top left part of the chart, does this seem reasonable?
I haven't modified any settings in the PFC that would increase my fuel via other means (Recalc was previously done)
I have intake/cb/dp/ic and I'm still on the stock sequentials and injectors. I just thought it was odd that my values differ so much from other people's that I've seen. Also, the car tends to idle in the bold area with no elec load. AFR started around 8 (with stock map), were sticking around 10 for a while, and finally started oscillating around 13 after really reducing fuel.
1.000 1.000 1.000 1.000 0.356
1.000 1.000 1.000 1.000 0.768
1.000 1.000 1.000 1.000 1.292
1.100 1.100 1.100 1.100 1.952
1.600 1.600 1.600 1.600 2.552
2.852 2.936 3.060 3.144 3.244
I haven't modified any settings in the PFC that would increase my fuel via other means (Recalc was previously done)
I have intake/cb/dp/ic and I'm still on the stock sequentials and injectors. I just thought it was odd that my values differ so much from other people's that I've seen. Also, the car tends to idle in the bold area with no elec load. AFR started around 8 (with stock map), were sticking around 10 for a while, and finally started oscillating around 13 after really reducing fuel.
1.000 1.000 1.000 1.000 0.356
1.000 1.000 1.000 1.000 0.768
1.000 1.000 1.000 1.000 1.292
1.100 1.100 1.100 1.100 1.952
1.600 1.600 1.600 1.600 2.552
2.852 2.936 3.060 3.144 3.244
06-26-11, 01:16 PM
#3
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(R4,N2) is a vey common matrix idle point.
The stock engine normally idles rich is why the air pump is there so that the excess air will give close to 14.7 stoick for emmissions controls to work properly.
The engine can idle down to mid 13s with a load like the AC, and around low 12s with no load (all without working air pump).
The stock engine normally idles rich is why the air pump is there so that the excess air will give close to 14.7 stoick for emmissions controls to work properly.
The engine can idle down to mid 13s with a load like the AC, and around low 12s with no load (all without working air pump).
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