I have a 5 speed, v6, 99 mustang. Milage was at 18-20, had the clutch redone and ever since, my gas milage has been 14-16. - I am running a K&N filter, tried a regular, no change. - Replaced: Spark plugs (double plat), plug wires - Fixed 3 cracks in the passenger side exhaust manifold, amazingly, the milage may have gotten a little worse. - Cleaned the MAF sensor If anyone can tell me how to boost my gas milage, I would be extremely grateful. Oh and i have refrained from any lead foot syndrome, as hard as it can be.
Well i know when my mustang was getting bas gas mileage al i did was replace the fuel filter and add injector cleaner and it cleared up, might want to check your o2 sensors also.
