Oil good, Water good, Transmission fluid good, new air filter. Purrs like a well a P51 mustang but without the 50 cals. But after driving for a while the "check Engine light keeps coming on but there are no other indications that something is a miss. Hum
Time to read some codes. If it threw a code concerning the EGR or the evap. canister and it's control solenoids/valves, you won't feel as much as a sputter.