What's the best aftermarket pipe for the Rubicon to improve low-end torque and more importantly, acceleration? How does the IDSX from Supertrapp do? Any other's do well? I'm looking for an at least semi-silent pipe.

 

I have an HMF pipe that I just installed a few weeks ago, so I don't have much ride time with it yet. The time I have got to ride it I can tell a difference in power, but I also installed a K&N filter and the Dyno Jet kit at the same time as the pipe. I don't think by just adding a pipe will do much for you. Oh if you want quiet then this HMF pipe is not for you. ITS LOUD! A good loud though, I think mine sounds sweet.