Quote Originally Posted by ghosthunter View Post
Although your Civic SiR can take the mixer type LPG kits, I would suggest going for the SGI-LPG kit and possibly ask the installer to install nozzles normally used for 2.0L engines. The SGI system should retain the engine's power but you might need to work closely with the installer to properly make a good fuel map for the SGI-LPG system.
Many thanks Sir.