Maybe this will help.
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My best guess is the IAC valve. If so it adjusts idle speed and prevents fast rev drop stalling (dashpot).
I can't think of a way this would effect shifting right off.
You might consider changing to the ecu/harness from a d17a2 so you get the vtec solenoid working. The cam figure w/o it is very mild. ..I.e. big difference in mid and upper rev power with vtec working. If you did/do change it, I suggest using the A2 throttle body to keep everything matching.
My best guess is the IAC valve. If so it adjusts idle speed and prevents fast rev drop stalling (dashpot).
I can't think of a way this would effect shifting right off.
You might consider changing to the ecu/harness from a d17a2 so you get the vtec solenoid working. The cam figure w/o it is very mild. ..I.e. big difference in mid and upper rev power with vtec working. If you did/do change it, I suggest using the A2 throttle body to keep everything matching.
