you need the jet kit and the pipe....it will wake up for sure then.
If you tried another jet I would try the 165 because my stock one was a 162. Depending on what elevation you are in there could be a different stock jet, i'm not sure if they all have this one. What ever it is maybe you could just try the next one up.when you do the pipe, you will need a 170, with out a pipe and just a filter im not sure what jet would work.
you got that right..my buddy has a video of us riding saturday in some thick mud..i'll try to get it from him and post it..his is stock and lagged down in the mud..mine with pipe and jet just keep on slinging mud.. ..When you do the kit it's like waking a beast up.