I need 2 of these? https://www.bellissimoto.com/parts/exhausts/exhaust-accessories/healtech-ese-exhaust-servo-eliminator-for-bmw-s1000-and-r-1200-1250-models ? I plan on doing the DNA intake box/filter and pro race 2 shorty slip on. Id like to do the exhaust servo mod as well. Is everyone just...