I'm no expert,by any means,and have GREAT respect for the opinions of our forum members...BUT...having three running Bullets,in constant rotation,each one being ridden at least twice a week,rain permitting,has taught me a few things...if you want to help your Bullet "on the cheap",ditch that over-sized factory silencer,replace it with a baffle-free Gold Star type "silencer",get rid of the factory air-box,replace it with a "cone" or "pancake" air filter,and re-jet the Micarb accordingly(I replaced mine with an AMAL carb)...my 1999 Enfield Deluxe has these mods,and she has a lot more "zip"...AND,she sounds GREAT...