Tech Tuesday 1/26/2016
Today we will talk about the importance or choosing a proper exhaust for your combination. While stock bikes are relatively friendly to most exhaust setup's, having the correct exhaust combo becomes far more crucial when you start making engine modifications such as cams and big bore kits.
Exhaust choice can make as much difference in a combination as the cam and it can make or break your setup. One needs to look at the big picture when putting a selection of parts together, each component needs to complement the next. The dyno chart in this post is from one of our dealers that tuned one of our FM 107 kits with TW-777 cams, they changed mufflers and it shows the specific difference between what just a set of mufflers can do.
Run #17 was with a extremely large stepped/open baffle, and Run #20 is with conventional straight thru baffles. Both setups got full dyno tunes. There is a difference of 20+Tq in the lower RPM's just from a muffler swap. Dyno chart courtesy Sheffer Performance
This is one example and individual results are relative to the combination. Thank you for tuning in and choose your exhaust wisely!