Quote:
Originally Posted by dannichols1474
Next steps are to check and adjust the timing advance offset to make sure the timing commanded by the ECU matches the physical timing of the engine as measured with a timing light, and then balance the airflow thru the ITB's.
Since the vacuum signal with the S-cams appears to be weak, I have created a new project in Tuner Studio which uses alpha-n (TPS signal) for loading sensing rather than speed density (MAP signal) I was using with the engine before the rebuild.
|
After checking ignition timing, balancing the ITB's is the next step - I am pretty sure the left and right banks are out of sync, so I expect the rough running at 2000 rpm to settle down after I balance the ITB's as it did when I originally installed and set up the ITB EFI last year.
Only then can I get a real measure of the vacuum signal quality - thank you Showdown for your input.