 I would get it all installed, put the mufflers on it or the full exhaust system you're going to put on it, and then go in and see what's going on with it, see if it just needs to be tuned. It may just start to work just fine once all that's installed. Without that on there, your fuel ratio is going to be so far off, it's going to have a really hard time operating properly. What did you do for fuel pump and regulator and that kind of stuff? How did you set that up?