Has anyone used/installed ufo's and what is the verdict? Better performance, better mileage? thanks 
tedgoesfast
New member
the biggest differance is in throttle response makes round slide work like flatslides
i put them on my indy 500 . yes they work well , but you better know how to play with jetting . i had to drop way down on the pilots
tedgoesfast
am I to understand that the throttle response is quicker, but that the top end and top speed are not really effected? so that in field use is faster on the throttle, but not really increased h.p.?
am I to understand that the throttle response is quicker, but that the top end and top speed are not really effected? so that in field use is faster on the throttle, but not really increased h.p.?
tedgoesfast
New member
we put them in a for a 1998 formula 583 also they made less affected by temp change
not gonna get more hp as the carb it STILL THE SAME SIZE
blue missile
New member
i have never seen one but there shows on tv about people who have seen lots of them, guess i'll need to see one for myself before i say fact.