Which Pipe

[BLUEDOBE88]

I am looking for the best pipe to purchase for my 2004 Rubicon 500. I have put in a dyna jet kit and a K&N filter. I am not really worried about the noise as long as it is tollerable. I will also need the Forestry approved stuff since we often ride on Federal lands.
Thanks

[Mike/HMF]

You can get a utility pipe that would give you the most power, but you would need a quiet core/spark arrestor so you can ride at 96-97dbs to pass for the forestry approval. The next option would be the qs1 eco-system that has half the power gains of the utility pipe but runs at 93-94dbs. you cannot take this quiet core out of this pipe. Hope this helps.
Mike/HMF.