- Location
- Burtonsville, Md
My mileage went down when I put a Flowmaster 40 on .Ha. My bad. Right under 90k.
Within the last two months. It had already gotten worse over the summer. I didn’t notice any difference in the immediate next tank after the CAI but it did improve slightly. I was also being conscious of how I was driving… with the exhaust and CAI I think I was heavier on the pedal for a while.
Mainly because I wanted to hear it !!