I was always told that if you aren't rejetting you aren't gaining any power.

Is the SuperTrapp IDS2 a complete exhaust or just the silencer?

 

The one I got was a header pipe and silencer. I think you can get just a silencer.

I was also told when rejetting (main) to go up 2 sizes and ride, if it's still pulling at the top then go up 2 more sizes, once you get it to nose over at the top then you should drop back down sizes.

I don't know about all that because I don't have the area or time to play around as much as needed....all I know is that I'm not lean and not overly rich.