Any tuners in the house. Need some help diagnosing
08-19-2003, 08:25 PM
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FormerVendor
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Any tuners in the house. Need some help diagnosing a little knock retard at high RPM 5k-5.5k. Here is a little EFI data I captured after going back to the stock MAF. How much time do I have to give the PCM time to learn after the swap and the PCM reset?
<font class="small">Code:</font><hr /><pre>
VSS mph RPM rpm ADV °BTDC KNOCK deg HO2 B1S1 mV HO2 B2S1 mV LTFT B1 % LTFT B2 % Duty Cycle Bank 1 Duty Cycle Bank 2 AFR :1 ECT °F IAT °F
93.2 5151 24.5 2.02 872 877 0.78 1.56 72.1 72.8 11.7 180 91.4
93.2 5162 24.5 1.93 885 881 0.78 1.56 75.7 76.3 11.7 180 91.4
93.8 5208 24.5 1.93 868 903 0.78 1.56 76 76.7 11.7 180 91.4
93.8 5199 25 1.85 864 890 0.78 1.56 75.2 76.6 11.7 180 91.4
94.4 5225 25 1.85 859 747 0.78 1.56 72.8 73.4 11.7 180 91.4
94.4 5262 25 2.02 859 777 0.78 1.56 73.3 73.9 11.7 180 89.6
95.7 5279 24.5 2.02 877 859 0.78 1.56 75.4 75.4 11.7 180 89.6
95.7 5301 24 2.46 868 885 0.78 1.56 77 78 11.7 180 89.6
96.3 5337 24 2.46 868 894 0.78 1.56 78 78.7 11.7 180 89.6
96.9 5354 24 2.37 885 890 0.78 1.56 79.5 80.2 11.7 180 89.6
97.6 5381 24.5 2.37 868 898 0.78 1.56 80.5 81.2 11.7 180 89.6
98.2 5426 24.5 2.29 881 890 0.78 1.56 81.3 82 11.7 180 89.6
98.8 5459 24.5 2.29 868 894 0.78 1.56 80.4 81 11.7 180 89.6
98.8 5459 25 2.2 890 881 0.78 1.56 81 81.7 11.7 180 89.6
99.4 5501 25 2.2 868 894 0.78 1.56 81 81.6 11.7 180 89.6
100 5522 25.5 2.11 872 890 0.78 1.56 81.9 81.9 11.7 180 89.6
101 5556 25.5 2.02 881 885 0.78 1.56 82.5 83.2 11.7 180 89.6
101 5592 25.5 2.02 877 894 0.78 1.56 82 82.3 11.7 180 89.6
101 5611 25.5 1.93 885 881 0.78 1.56 80.5 81.2 11.7 180 89.6
102 5643 25.5 1.93 890 877 0.78 1.56 80.7 81.4 11.7 180 89.6
102 5645 25.5 1.85 872 890 0.78 1.56 80.8 81.5 11.7 180 89.6
103 5682 26 1.85 885 881 0.78 1.56 80.2 80.8 11.7 180 89.6
103 5705 28 1.76 877 877 0.78 1.56 80.7 81.4 11.7 180 89.6
102 5679 34 1.76 907 903 0.78 1.56 60.7 61.4 11.7 180 89.6
</pre><hr />
<font class="small">Code:</font><hr /><pre>
VSS mph RPM rpm ADV °BTDC KNOCK deg HO2 B1S1 mV HO2 B2S1 mV LTFT B1 % LTFT B2 % Duty Cycle Bank 1 Duty Cycle Bank 2 AFR :1 ECT °F IAT °F
93.2 5151 24.5 2.02 872 877 0.78 1.56 72.1 72.8 11.7 180 91.4
93.2 5162 24.5 1.93 885 881 0.78 1.56 75.7 76.3 11.7 180 91.4
93.8 5208 24.5 1.93 868 903 0.78 1.56 76 76.7 11.7 180 91.4
93.8 5199 25 1.85 864 890 0.78 1.56 75.2 76.6 11.7 180 91.4
94.4 5225 25 1.85 859 747 0.78 1.56 72.8 73.4 11.7 180 91.4
94.4 5262 25 2.02 859 777 0.78 1.56 73.3 73.9 11.7 180 89.6
95.7 5279 24.5 2.02 877 859 0.78 1.56 75.4 75.4 11.7 180 89.6
95.7 5301 24 2.46 868 885 0.78 1.56 77 78 11.7 180 89.6
96.3 5337 24 2.46 868 894 0.78 1.56 78 78.7 11.7 180 89.6
96.9 5354 24 2.37 885 890 0.78 1.56 79.5 80.2 11.7 180 89.6
97.6 5381 24.5 2.37 868 898 0.78 1.56 80.5 81.2 11.7 180 89.6
98.2 5426 24.5 2.29 881 890 0.78 1.56 81.3 82 11.7 180 89.6
98.8 5459 24.5 2.29 868 894 0.78 1.56 80.4 81 11.7 180 89.6
98.8 5459 25 2.2 890 881 0.78 1.56 81 81.7 11.7 180 89.6
99.4 5501 25 2.2 868 894 0.78 1.56 81 81.6 11.7 180 89.6
100 5522 25.5 2.11 872 890 0.78 1.56 81.9 81.9 11.7 180 89.6
101 5556 25.5 2.02 881 885 0.78 1.56 82.5 83.2 11.7 180 89.6
101 5592 25.5 2.02 877 894 0.78 1.56 82 82.3 11.7 180 89.6
101 5611 25.5 1.93 885 881 0.78 1.56 80.5 81.2 11.7 180 89.6
102 5643 25.5 1.93 890 877 0.78 1.56 80.7 81.4 11.7 180 89.6
102 5645 25.5 1.85 872 890 0.78 1.56 80.8 81.5 11.7 180 89.6
103 5682 26 1.85 885 881 0.78 1.56 80.2 80.8 11.7 180 89.6
103 5705 28 1.76 877 877 0.78 1.56 80.7 81.4 11.7 180 89.6
102 5679 34 1.76 907 903 0.78 1.56 60.7 61.4 11.7 180 89.6
</pre><hr />
