CAT delete, my two cents - I have one on my 14 RT with a baffle …. IMHO, if the Monster ECU flash had been available that is the route I would have gone.... I don't think the weight savings is worth it (20 lbs. +/-) on a 1150 lb Spyder (plus 175 rider weight) - 20 lbs. isn't going to noticeably change anything. My RT was never in danger of over-heating so that wasn't an issue. I got mine used from another member ($ 150.00). Yes, the sound changed a bit, but not much (I'm happy I like my Tunes ) For the price of the ECU change, to me it's a no-brainer.... the Bang for the Buck is huge. ……………….. Mike