02-23-2021, 07:08 AM
For the record, on my '17EX with the Pipemasters and O2 sensors (I do believe they're on there, actually) I average around 42mpg mixed city/highway and I am not gentle on the throttle. The best I'm able to get is maybe 48mpg on the highway at 65, though. On my '14 (with 4-1 Yoshi slip-on and O2 sensors intact) I was able to get over 52mpg on the highway at best, averaging more like 45mpg mixed city/highway. I recognize it's not apples to apples but just putting my numbers out there.
