TheBlueOompa
Bought an X
- Location
- The Woodlands, Tx
I recently replaced a broken exhaust manifold, passenger side, with a new oem one. After getting it fixed I am seeing a drastic drop in mpg's. Before the replacement i was getting an average of 16.4-16.9 mpg around town and going up mountain roads, and 22 highway. Now I am averaging 14.3 around town and unknown highway. I just haven't done a strict highway run just yet. I know my flex pipe is leaking and has been for sometime before the manifold replacement, but what is going on here? I thought after getting it replaced would help boost my mileage even just slightly but at least keep it where it has been and not just drop it as it has.