The engine springs to life with just a light tap on the start button, and immediately settles to an even, staccato idle. It's obvious that a new conductor is directing this duet. Some of the minute peripheral vibration is noticeably absent, and the best word to describe my overall perception of the note, is cleaner. A more rounded, individual pair of thumps. Pulling away in first gear, carburetion seems more closely connected to the twist grip.
Throttle response is a level higher.
Working up through the gears feels the same, but acceleration in top gear is different. In stock tune, the motor would seem to be succumbing to a mildly overbearing and retarding vibration. With the new ignition, acceleration uphill feels positively linear. The power doesn't want to bog down. More twist just gives more go with no complaints, backed up with a perfect bark.