hi n welcome to the .org, first of all!
nice to meet ya. Congrats on the new bike!
now, if you have never had your baby past say, 150mph-you have absolutely no need for a TRE. If you have no intention on ever holding your wrist locked-down on the throttle, in 6th gear, watching the world move by at aprox. 273 FEET EVERY SECOND...then dont even bother with a TRE. It does nothing to improve performance of the motor, just knocks out rev limiter in 6th so you can make the earth move by underneath you at like, 286 feet per second.... think about that my friend.
(i have run my bike to the limit, which in my case <16/42 combo> is just about 192-195mph; it is thrilling, addictive, and the biggest adrenaline rush I've ever experienced! better than fighting, drinking, winning (anything!), and yes-better than s*x! But you have to know your road before you attempt speeds like this, have someone nearby ready to call for paramedics if nec, and make sure you have life ins...just in case) or, just go buy a gear indicator and be happy. Some new pipes will make it sound pretty darn good, and you will SOUND like you're going a lot faster!