Banshee carbs Ultimate flow optimizer

[901banshee]

Anybody have any experience with these? Tried a search but couldnt find anything. I find it hard to get 5 hp with these.

 

http://www.thunderproducts.com/u_f_o.htm

[NYUK]

its bullshit.

[sprinklerman]

We used to do that 10-15 yrs ago with fuel resistant epoxy ....alot cheaper too. Helped the bottom-end on big carbs like 44mm mikunis on zillas.

[camatv]

its a goofy way to get a shitty ass old carb to work better. there is a reason the round slide carbs disapeared from existance except on yamaha's atv back in the early 80's// i fyou never ever ever ever plan to get rid of the stock carbs they might be a nice improvement to throttle response but i doubt 5hp more??