Chris S.
09-14-2005, 07:05 PM
I have a IMS 440 kit with a 12.5:1 piston. I have a HMF sport series full exhaust and air box with no lid and UNI filter. I need to know all the carb settings that are recommended with this or a similar set-up. I just changed the exhaust and air box from the stock ones and its not running as smooth as it should. Right now I have 160 main jet - 42 pilot and 3 down from top on clip. HMF sent me a 180 main and that seemed to make things worse. I am running 110 octane fuel also. Thanks for the help guys!