I'm trying to use the timing light to adjust my CPS to the proper position. I have double checked to make sure everything to this point is correct. I turn on my car, and jumper E1 and Te1 to adjust timing to the correct mark; however, the diagnostic box when jumpered is not retarding my timing in order to perform Initial Timing. The diagnostic mode is working because my codes read across my dash: codes 24 (intake air). I am running a MAFT in speed density mode with no AFM (GM 3 Bar and AIT). Thanks in advance
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