Join Date: Jan 2017
Location: Ontario, CANADA, ,
Originally Posted by johnchypermotard
wow ... don't hold back there DarR ... tell us how you really feel.
As true as it is, it's unfortunate.
Ok I won't hold back.
If you analyze dyno charts with aftermarket exhausts, it will become readily apparent that very little if any gains are produced at the top end of the power range. The plethora of gains are in the mid rpm range where all the emission testings are performed.
Furthermore, these gains are slim without modifying the AFR with a flash, upmap or fuel controller as the engine still runs too lean.
I suspect but have yet to prove (with dyno charts) that it's actually the modified fuel map which provides a good portion of the mid range performance enhancement. This would certainly be data that these exhaust manufacturers would not want the buying public to know.
2018 Multistrada 1260 Pikes Peak ------ 2016 Monster 1200 R
2016 Panigale 959 (gone but not forgotten)
Last edited by DarR; Mar 11th, 2019 at 8:53 pm.