Are they the same as the K&N kits?
More importantly, will one make a difference on my Warrior?
If I get one, which stage should I use?

Thanks.

 

If you have an aftermarket pipe and a ProFlow kit, then you need to re-jet. Yes, K&N's jet kits use Dynojet parts and come with Dynojet's tech support number in case you have any questions. Well worth the money IMO.

 

I have a 1999 Warrior with an E-Series exhaust with 12 discs, a K&N air filter, and 4 one-inch holes. I run a dynojet jet kit in my Warrior I thinks it does really good. As for what stage to use I am running their 138 jet. You just have to test them out.