You can "assume" that the DJ needles, with clips in the center, are
about the same as TBS needles.
Also, those TOR's don't breathe as well as most open pipes, still pretty restricted.
If you have a problem with a certain THROTTLE POSITION you can easily correct it if you know where the problem area is. Use the
Mikuni Tuning Manual and follow their method of using tape and marks to find the problem throttle position. Once you know what throttle position you need to correct, you can change mains/needles/clip posiotion or whatever and dial it in really nice that way.