It's not the tors either, as i have been using those for a long time and i never saw any mileage difference between those, the long tors, or the stocks all with thier corresponding tunes. The mileage variations i have been getting i now know are almost all if not all due to the seat duct being off.
So if I'm reading this right, there is no fuel mileage difference between stock pipes and long or short TORS. That would mean my fuel mileage gained by installing the HogSlayers and the TORS tune would make them a better choice for someone that wants performance and economy. Correct?