I highly doubt it but cant say for sure as I have not taken a reading from the ICM. I'd love to be able to play around with the curve. As it stands, all one can do to shift the curve as a whole is fit an ignition advancer or retarder.Does the throttle sensor setting shift the entire advance curve?
Ignition Timing Advance or Retard The Why's and How's
What makes you think that I would start looking at other more likely causess for problems starting. Starter motor bolt corrosion maybe. It's one of the common faults!I have some problems starting which were indicative of overadvanced ignition.
What's the carb setup with regards to jetting/mixture. You may need to tweak your fuel screws. Is the air filter standard and clean. Also have you done a carb sync/balance since adjusting the TPS. If not then do this first.but occasionally it gives the overadvanced struggle effect. What I have noticed since is rough running at around 3000rpm.
How to balance your carbs
Carb Tuning Guide