Wags
Active Member
- Local time
- 4:23 PM
- Joined
- Aug 26, 2016
- Messages
- 196
I have the sick bike expansion chamber. I'm pretty sure I haven't found the magic Length yet, I should feel the pipe kick in. I tried cutting down the header not by quarters, but by eighths just to make sure I didn't miss the mark. No changes. So I started over and cut a new piece of copper almost 3 inches longer than the header that comes in the kit and worked my way down again to just the fittings it takes to get around my down tube and connect to the first black exhaust pipe. The next step will be to either go even longer on the header or start taking length off that first black pipe.(opposite directions i know) Before I do either I would like to know from other people out there at what rpm does there sick bike pipe kick in? I know every pipe/engine configuration is different but i would like a reference point. Any help would be nice. Thanks