‘11 civic LX manual, 125K. A few years ago, it had rodent damage. Dealer repaired, 15 months later, code po172 with cel and it would die when the clutch was depressed while decelerating. Maf, O2 sensors, fuel pump replaced which did not fix it. Turns out it was the dealer splice repair. They had it electrical taped and used the wrong gauge wire. Another 15 months later, PO172 is on again. The only noticeable thing is that at 2800 rpm, there is a soft roar which goes away at 3000 rpm. The cel is intermittent. I tightened connections from the maf. Any ideas?