Tuning
08-02-2004, 05:07 PM
#12
Ryan23. Can you mull over this one?
My 93 Tune Diagnostics Read with a Predator Programmer
The Truck (See Signature) 2003 Z71 5.3 ECSB. Nelson 93 Tune, K&N and SS Silverado exhaust a 160 CFM increase in flow.
Can I improve here. These are WOT runs. Hot Weather.
MAF 30.70 .
Long Term + 2.34%.
Short Term 0%.
Spark I did 4 WOT runs and it peaks to 30.0 and drops between 27.0 and 25.9 before it shifts, it's kind of hard to catch.
O2 readings were 890 to 900 across the 4 banks.
0 Knock all the time.
Thanks,
The Truck (See Signature) 2003 Z71 5.3 ECSB. Nelson 93 Tune, K&N and SS Silverado exhaust a 160 CFM increase in flow.
Can I improve here. These are WOT runs. Hot Weather.
MAF 30.70 .
Long Term + 2.34%.
Short Term 0%.
Spark I did 4 WOT runs and it peaks to 30.0 and drops between 27.0 and 25.9 before it shifts, it's kind of hard to catch.
O2 readings were 890 to 900 across the 4 banks.
0 Knock all the time.
Thanks,
08-28-2004, 05:31 PM
#13
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Ryan-->
I came up with -3.013 for my average L trims. Any clue on how much I should lean out my mixture? Multiply ifr table by 1.1, 1.2,?? 
When tunning you should use your L-trims to calculate what your IFR number should be. Take a long cruise and log all of your L-trim readout. Average them and multiply it as a percentage to your existing IFR numbers. For example: if your averages for Bank1 come out to +3.2 and averages for Bank2 come out to +3.0 -->avg. those = +3.1, so to richen up the mixture, multiply the IFR table by 96.9% (this will yield a smaller number in the IFR table than when you started) The lower the number in the IFR cells, the richer the engine will run.
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