Snatchy Throttle

That's the term used by Triumph Bonneville's, Thruxtons, and Scamblers use to describe the uneven throttle response, particularly in low gears, unique to all of these models. It's said to be the result of an air injection system required but the EU. Supposedly it  makes a minuscule improvement engine emissions but is extremely annoying to the rider. In addition to the snatchy response, it causes extreme bluing of the exhaust pipes and back fires on down shifts.

I just got my Bonnie back from Bluin Performance Center where they removed the air injection system and remapped the electronic fuel injections. The results are amazing. No throttle snatch! No backfiring! The bike is definitely more responsive, I hope I don't get a ticket! To top it all off it produces a more pleasant exhaust note!