I have done about 1000 miles since installing the exhaust system. I am starting to not notice it is there. Again, the exhaust tone is most noticable at the lower RPM ranges (below about 2000ish), which means it causes little aural interference with normal conversation and music frequency ranges. As the weather cools, I have also been driving more with the windows down, and that is obviously much louder with respect to radio and conversation interference.
I have had a hard time nailing down fuel efficiency. While some numbers are suggesting an increase, it is important to note I have also used the AC less as the weather cools. On the other hand, I have spent a lot more time offroading in the last few weeks (perhaps 12-15% of the actual engine running time since the install has been offroad), which artificially lower mileage relative to normal driving. Two of my last 5 fillups were after about 25% of the miles having been done offroad.
I will note, I just drove a ~320 mile round trip and hit 20 MPG, which I have literally never done. Even if the pumped stopped short by a full gallon on my last 20mpg fillup, I would have netter over 18mpg, which again I havent done since adding all my armor.
Ill continue to collect data and post back.
Gives my little 4 banger some balls, sounds like an inboard motorboat at idle and can't really be called loud at all, a little throaty on accelerations, then smooth but noticeable at cruising speeds. On to the next
