Airsal kit  is an easy and  direct bolt up- Uses stock manifold- No modifications required for kit. 
Carb idle jet drilled one size up- main jet bumped to a 56 or 58 

RESULTS-w/Technigas pipe

Performance-Performance-Performance
-Great low end power
-Quick RPM build (due to reed valve).
-Easy starting and a steadly idle
-Most powerful TOMOS we have built to date
-Top End performance is great.