Each application is different.
Regardless of what size pump diaphragms (30 or 50) you use, it all boils down to how much volume needs to be delivered (squirter size) to avoid a flat spot/bog when you floor it and for how long that volume has to be maintained (30/50 cc pumps & cam size) so it finishes by the time the main circuit takes over. Squirt too much initially and/or for too long, you get into a rich condition. Not enough volume and/or duration, you get bogs/flat spots.
Smaller squirters with a given pump shot increases the duration. Bigger squirters shorten the duration.
Bigger or smaller pump cams shorten or lengthen the squirt duration for a given squirter size.
I have an Autometer playback tach and can actually see minor hesitations in the playback that I can't feel when weather conditions and/or engine temps are too cool. This is during the initial "hit" when the converter is "flashing". I can't wait to try their new DL version tach which includes a A/F channel, as well as a pressure channel!
Accellerator pump circuit tuning for 60' times and jet for mph.
Autometer Ultimate DL tach
