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OK, I did it. But before you jump me. Let me tell you. Some of you might have read my other post about me getting a used Yosh RS-3 for $50 well after alot of cleaning it looks great.( Pics coming soon) The guy also had a K&N for $20 never been open but it is old the box was brown but the airfilter looks great all instrutions and waranty still in the box heck even a sticker. I said well why not. So I installed it today.
So I crank it up. No real different poping the throttle at idle. So I take off down the road. I red lining everything gear till about 80mph nothing special yet.. So I just started cruising at first kepting the rpm's about 7,000 pop the throttle quick and it blog alittle the picks up in everything gear. It was like that everytime. If I just open it up quick it would blog. But If I was moving WOT no real effect umm. But if you would let go of the grip or slow down for traffic and went WOT again. BLLLOOOGGGG and eventually take off like a rocket. Now I have the Ivan Jet kit, 5 advancer, grinded welds, and the Yosh. And to install another jet just to run the K&N mostly not goin to happen. But I wanted to see what all the pros were talking about and now I know. The funny part is if havn't rode with OEM filter so long and by just sticking the K&N in there. I probably wouldn't know the different ( or really notice the blog say if you brought the bike with a K&N and couldn't compare it). Because it isn't that big of a blog. But comparing the filters in a like 40-100 or 80-100 something like that I know there would be a huge difference in E.T. But 0-100 IDK. I would have to ride back to back swaping filters. But I seem remember still having alittle blog at the beginning of every shift with the K&N
Summary: if you have a jet kit or stock jetting (except holeshot) and you have a K&N just try a clean OEM filter and you will be wondering how you rode so long with the K&N.
Reason why: From what I read on here to. To break it down how I understand it. The K&N flows so freely that the small cc engine can't pull enough vacuum to sux out the fuel from the carbs. Plus with all that extra air it need more fuel. SO really the engine is getting a double boogie becuz it need more fuel but can't pull it becuz it doesn't have enough vacuum.
P.S. Not tommarrow but Wed. I am going to strap my video camara to the back and let you listen to the exhaust. With both Filters. And we will compare.
So I crank it up. No real different poping the throttle at idle. So I take off down the road. I red lining everything gear till about 80mph nothing special yet.. So I just started cruising at first kepting the rpm's about 7,000 pop the throttle quick and it blog alittle the picks up in everything gear. It was like that everytime. If I just open it up quick it would blog. But If I was moving WOT no real effect umm. But if you would let go of the grip or slow down for traffic and went WOT again. BLLLOOOGGGG and eventually take off like a rocket. Now I have the Ivan Jet kit, 5 advancer, grinded welds, and the Yosh. And to install another jet just to run the K&N mostly not goin to happen. But I wanted to see what all the pros were talking about and now I know. The funny part is if havn't rode with OEM filter so long and by just sticking the K&N in there. I probably wouldn't know the different ( or really notice the blog say if you brought the bike with a K&N and couldn't compare it). Because it isn't that big of a blog. But comparing the filters in a like 40-100 or 80-100 something like that I know there would be a huge difference in E.T. But 0-100 IDK. I would have to ride back to back swaping filters. But I seem remember still having alittle blog at the beginning of every shift with the K&N
Summary: if you have a jet kit or stock jetting (except holeshot) and you have a K&N just try a clean OEM filter and you will be wondering how you rode so long with the K&N.
Reason why: From what I read on here to. To break it down how I understand it. The K&N flows so freely that the small cc engine can't pull enough vacuum to sux out the fuel from the carbs. Plus with all that extra air it need more fuel. SO really the engine is getting a double boogie becuz it need more fuel but can't pull it becuz it doesn't have enough vacuum.
P.S. Not tommarrow but Wed. I am going to strap my video camara to the back and let you listen to the exhaust. With both Filters. And we will compare.
Now you know.
I have like 4 K&N stickers on my tool box, I used to work at a dealer, everything I put on bikes, the sticker ended up on my box 
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