engine stumbling at high rpm????

[Tilly819]

thanks ash i thought it might be that.... unfurtunetly i dont have the air box anymore..

a chap on locostbuilders recons it might be running lean....due to like you say a change in air charicteristics...recomends maybe a power comander to adjust the fueling in conjuction with a power comander.....which i think might be good since then with it accedently fir the forced induction in a year or so it will alredy be there.....

your thoughts?

tilly