LM1 LMA-2 RPM converter TPS and VSS hookup
10-06-2009, 09:08 AM
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LM1 LMA-2 RPM converter TPS and VSS hookup I have the LM-1 with LMA-2 RPM Converter. The RPM logging works perfectly. I want to log throttle position and MPH.
Is there any trick to doing this? It looks like I need to tap into #24 on C2 for the TPS signal and #21 (high signal) C2 for the VSS. #20 is the VSS low signal. Does this need to be considered?
Other than adding a ground and configuring the Converter through LMProgrammer, is this all possible just by tapping into these wires from the PCM?
Is there any trick to doing this? It looks like I need to tap into #24 on C2 for the TPS signal and #21 (high signal) C2 for the VSS. #20 is the VSS low signal. Does this need to be considered?
Other than adding a ground and configuring the Converter through LMProgrammer, is this all possible just by tapping into these wires from the PCM?
10-10-2009, 07:32 AM
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Well, these connections worked except enormous gain (spiking) from the VSS high signal. I was able to smooth it using that feature in LogWorks3 with the maximum setting. Also, with the high signal, 2.35 volts = 160 mph. That seems like quite an offset from the 5v i would have expected.
Now I see just a plain VSS Signal #50 on C2. Anyone know if I should use that instead?
With these working I want to add manifold vacuum. I'm wondering if I should tap into the MAP Sensor Signal - pin #32 on C2 for that. Anyone know for sure???
Now I see just a plain VSS Signal #50 on C2. Anyone know if I should use that instead?
With these working I want to add manifold vacuum. I'm wondering if I should tap into the MAP Sensor Signal - pin #32 on C2 for that. Anyone know for sure???
