EXUP Worldwide

The last time I ran the bike we had it on a dyno with the gas analyser,the large mains where the right size according to the analyser and it had a power increase.I do not have the exup in I have a full system...(have you ever held one of those things in your hand?)the exup that is ,its hevy.I will t...

dragracer I ran the bike last with the 136 mains ,do you have the exup?I have the air screws at 3/4 turn out to the point where it has a lean hesitation when I snap the throttle and it still stutters,a bit less but it still does.O and thanks for everyones help I thinks i will change those emulsion t...

whats up gang pullin me hair out,my 94 yzf stutters at idle to 4thou.No exup stock needle jet with a dyno let kit with 136 mains stock air box.the bike runs great above 4 thou.it is a rich situatio cause the needles are on the lowest setting if i richen it one clip it runs worse.the main is right on...