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Just some info from my experience w/ the SGII, and feedback I received from Linear-Logic.
1. Do NOT select the FAST refresh rate. Our car uses ISO which doesn't allow more than 8 requests/second for data. In the FAST rate, the requests can be up to 16/second. The computer will usually just stop responding to some requests. This will have unpredictable effects on your car. Mine stopped showing the fuel cutoff condition.
2. For those that have received the C1555 code, it is a Honda code which has not been defined/released yet. It may or may not be related to item 1 above, but my Civic only threw that code when I had the FAST refresh rate selected.
3. Do not adjust the CUTOFF value reached using MORE>SETUP>FUEL. This is a value to determine if the fuel cutoff is the cause of an open-loop condition or if it is due to hard acceleration. This was a late addition to the current version of the program and not covered in the manual. The ScanGaugeII compares the TPS reading to this value. If it is below the CUTOFF value, fuel cutoff is indicated. If it is above, hard acceleration is indicated. Normally, there is no need to adjust the default value. The reason it is adjustable is that a few vehicles have very high no throttle TPS values. The best value is to set it 3 above the no-throttle TPS level, but this is not critical. If you adjust it to 0, fuel cutoff sensing will be disabled in the ScanGaugeII.
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