- replaced screws holding carb butterflies in place with lower profile units (which were ground down as much as possible)
- built a new airbox lid (ie. "Filter-in-lid design) with a larger filter element (area is up 40% over previous version) which also increased volume slightly and increased clearance over the stacks
- raised the tank a bit to improve airflow into filter/airbox/engine
- matched carb throats/intake collars/intake ports (minor dremmeling to latter two to provide a smooth and uniform channel for the air)
- put thermal barrier on underside of airbox and carburetors (cooler airbox and carbs mean cooler air, better air density for improved power)
To improve response, I drilled a small additional lift hole in each slide (was running single hole before, just added 18% more area)
Having taken a couple rides for the purpose of tuning, I had to richen the pilot circuit (easily achieved by turning F-C screw) and go up 3 sizes on the mains (from 155/158 to 162/165) to give the bike enough fuel.
The end result? A noticeable increase in intake noise (not a bad thing) and some new-found response and power. The bike pulls better everywhere (response is sharper, the pull more authoritative) and dropping down a couple gears at cruising speed and rolling on the gas now has the bike surging ahead with more fervour (had the front come up on me!)
A true win-win (one for a successful experiment, and one for more power on the bike). Another successful day in Mikstr's OCMD-land
