maybe2fast
NAXJA Forum User
- Location
- COMMERCE, MI
okay, the xj has 193,000 on motor, rebuilt AW4.
1.5 lift
cone filter
dynomax muffler still have cat
lt1 injectors
new O2
new stock cooper plugs
I just took a trip with the truck and averaged 15.5 mpg all highway. WTF? Truck runs great but i know it has better mileage in it. I switch back to the stock injectors a while back and the truck ran like crap and got same if not worse mileage compared to the lt1 injectors so I know its not them. I have ran an intake cleaner through the intake (like seafoam but pressurized sprayed into the TB). It cleans the intake runners and valves. I don't know what else to try. I get 13.5 driving in the city and 15.5 on the express way. The tires are stock size and gears are stock. I now its a 4x4 but I know this truck can do better. No Check Engine light and the bulb works. Suggestions?
1.5 lift
cone filter
dynomax muffler still have cat
lt1 injectors
new O2
new stock cooper plugs
I just took a trip with the truck and averaged 15.5 mpg all highway. WTF? Truck runs great but i know it has better mileage in it. I switch back to the stock injectors a while back and the truck ran like crap and got same if not worse mileage compared to the lt1 injectors so I know its not them. I have ran an intake cleaner through the intake (like seafoam but pressurized sprayed into the TB). It cleans the intake runners and valves. I don't know what else to try. I get 13.5 driving in the city and 15.5 on the express way. The tires are stock size and gears are stock. I now its a 4x4 but I know this truck can do better. No Check Engine light and the bulb works. Suggestions?