2-Stroke Retrofithttp://engineeringtv.com/blogs/etv/archive/2008/04/16/2-stroke-retrofit.aspxEnvirofit is clearing the air and saving fuel in the Philippines by retrofitting dirty two-stroke engines with clean, fuel-efficient direct injection technology. Have a story suggestion? Want to be featured on Engineering TV? Send us a tip at: EngineeringTVenCommunityServer 2007.1 (Debug Build: 20917.1142)