If you run stock injection, converted by someone like Guhl to run methanol, it's not horribly different. I generally empty my fuel tank every week, and purge the system.

http://www.maximumdirt.com/forum/vie...Purging#p95590

Others seem to get by just starting the car up and letting it run for a few minutes every two or three days. Probably not a bad idea to clean the injectors every couple of months, either way you go.

http://www.maximumdirt.com/forum/vie...ectors#p105726

Bill