A while back I remember someone only getting about 70mph out of their F5. A few days ago, a buddy's sled which was running great started bogging into the 65-70 doldrums. After the 3rd hood opening, we finally noticed the exhaust sensor came out. (I guess you don't notice what you aren't used to ) He started it up and was back to full power. Hopefully none of you overlook this small detail like we did!