I have a 1997f3 with a full two bros exhaust, it made 95.0 hp on the dyno running rich because the air filter is the worst clogged filter I have ever seen in my life. My question is if I go to a K&N will I need to re jet the bike? Or should I stick to the oem that's in it now(a new one though)? Let me know what you guys think. Here is the dyno sheet as well, it shows the air/fuel ratio. thanks

 

well, you have a full two bros, and it's running rich, if you replace to a K&N filter it will make the bike run a little leaner... just keep in mind that you might actually lose a few HP... but you shouldnt have to rejet

 

Putting in a factory (clean) OEM filter in it is going to lean it out as well, just not as much. I'd start there.

 

I figured that I would go with an OEM filter and run it on the dyno again in a week or so, I am curious what the numbers will be.

thanks guys.