VVTuner into 96 MSPNP - inconsistent RPM while cranking
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Got a VVTuner that's going into a 1.0 MSPNP that's had it's cpu upgraded to an MS2. Using stock NB sensors that are wired to the CAS harness, then intercepted at the ECU plug into the VVTuner and using VVTuner outputs back into the harness for cmp/ckp.
Cranking with vvtuner shows a consistent ~260 RPM, so afaik, those sensors are reporting fine. Tunerstudio shows a different story - 260 -> 0 ->1 ->260rpm. If this was a normal MS, I'd be playing around with the crank sensor spacing and R52/R56 trims. Verified wiring, VVTuner is grounded to MSPNP through pin9 of the harness.
Snagged a composite log - which seems a lot shorter than it should be (cranked for ~15 seconds). Any ideas appreciated, thanks.
Cranking with vvtuner shows a consistent ~260 RPM, so afaik, those sensors are reporting fine. Tunerstudio shows a different story - 260 -> 0 ->1 ->260rpm. If this was a normal MS, I'd be playing around with the crank sensor spacing and R52/R56 trims. Verified wiring, VVTuner is grounded to MSPNP through pin9 of the harness.
Snagged a composite log - which seems a lot shorter than it should be (cranked for ~15 seconds). Any ideas appreciated, thanks.
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