Originally Posted by Pleiades

Yes, very much so.

Of the three mods you mention, the exhaust swap is actually the least economic in terms of improvement in performance against cost (but you've done it already! . Changing the system (getting rid of the cat) will make a difference to the performance, but only a small one compared with fuelling and breathing mods; it�s more about weight-saving, aesthetics and sound.

The three most productive/economic mods to do, which will smooth out your ride, increase and broaden the spread of power are and sharpen up throttle response are:

1) Kev mod (fuelling) - http://www.xt660.com/showthread.php?t=11641

2) DNA filters (stage 2 or 3) - http://www.xt660.com/showthread.php?t=9636

3) O2 Controller - http://www.xt660.com/showthread.php?t=20381

The above trio of mods will really transform your Tenere for really not that much of a financial outlay. They will all work well with your Leo Vince exhaust.