Does anybody now how far to advance or even retard the timing for a two into one pipe??I had toomeys on with the timing advanced 4 degrees and went to the motofast pipe and was wondering what i should set it at

 

Experiment and find what it likes best. There isn't any end all "this is the best". There are many factors that will influence it ultimately. An afternoon spent testing can reward you with better results. Initially 4 degrees will work, but with the 2>1 pipe it may like less initial timing advance. Test, test, test.