I noticed some of you have "Airbox Mods" on your machines. Will someone please explain in detail the "Airbox Mod"? I have a 2000 Polaris Scrambler 400 4X4. Also, those with the same machine, was it worth it???

thankz,
darren

 

I would also like here about these mods for my 400 sportsman.

TNT

 

yeah, i'm curious too, and was wondering if i should do that or remove the airbox and use a clamp on, but i do ride in mud and water alot too, so any input is appreciated

 

I've done the airbox mods, but it was at the same time as installing the entire RCR Stage 1 kit. So I can't tell you how much of the incredible difference is due to the airbox. It consists of
1. Cutting a 1" hole between (but higher than)the 2 exhisting intakes.
2. Cutting a hole or removing the "divider" inside the airbox.
3. Either removing the upper intake boot or cutting it and inserting a pipe with a bigger diameter (splash protection) to allow more flow.
4. Adding a taller UniFilter and using only the outer lid.
You may need to re-jet. I'm not sure. Good luck.

 

I have done the mod and the difference is very noticable. I can actually feel the motor breathing better. Makes much more power now. I will try to e-mail a picture that someone sent me a while back. He might even respond himself to your post.

Just remember to do the whole mod and not only part. I added the bigger pvc pipe but did not cut a 1" hole between boot and box. Once that hole was cut, the airflow seemed to have doubled. I did not re-jet because I had already done it for the HPD pipe.

Good luck.

 

Did you find the picture...if so please post.

Thanks,
Steve

 

The picture and a quick explanation is on the way.