Rookie mechanic w/ questions
Posted September 27, 2005 - 01:36 PM
1) Just bought a new K & N filter for my '99 WR 400. I took out the old foam one along with the plastic insert with a screen in it. Was that right? Should I have tried to leave the screen insert in the K & N filter at all?
2) My bike runs real well overall. I have good throttle response, and plenty of power for me across the range. The only problem I get is when I am cruising up something like a hill climb and kinda punching it, then i get to top and lay off completely...or other times when I am getting on it, then immediately bog it...it DIES. Any ideas on what could be going wrong here?
Posted September 27, 2005 - 03:47 PM
The bog off idle with a quick snap of the throttle? Welcome to the world of 4 strokes. Maybe some of the more advanced tweakers here can tell you how to eliminate that but it's usually something that most of us live with and learn how to accept.
Posted September 28, 2005 - 04:47 AM
Do a search on the BK mod or free mods.
Posted September 28, 2005 - 08:22 AM
Posted September 28, 2005 - 08:54 AM
The article that I found on it said that it WILL NOT work for a '99 WR 400. That is what I have, so no luck for me. It sounds like a great mod though. Still wondering about my original air filter question. Was I supposed to take the plastic part with screen on it that goes in the foam filter OUT when I replaced the foam filter with the K & N filter?
I have never used the K&N filter so I can not help. But if you fire an e-mail to K&N I am sure they will tell you. The only good reason to use the plastic piece is for the back-fire screen (the wire mesh). If it mates up to the K&N then I would guess that you are suppose to reuse it.
Posted September 28, 2005 - 11:58 AM
Posted September 28, 2005 - 12:30 PM
"You will not reinstall the guide that the original air filter goes onto. Install the K&N Air Filter without this guide.
I am going to revise the installation instructions to include not using the guide. I will send you a copy of the installation instructions when I complete them.
I hope this helps.
Powersports Application Coordinator"
Posted September 28, 2005 - 03:39 PM
Posted September 28, 2005 - 03:47 PM
Posted September 29, 2005 - 07:06 AM
Posted September 29, 2005 - 09:29 AM
He runs an after market filtrer in his XR650r now but I can't remember which brand. I'll ask him tonight.
Posted September 29, 2005 - 12:39 PM
Good luck man.
I actually found that my stock foam is pretty good when compared to the Twin Air aftertmarket I bought. It has more surface area and provides a better seal.