Tune-up

[Shawn_65]

So I got the vette back from the shop after getting the Distributor Cap, Rotor, Coil, Plugs, Wires, Fuel filter, and 8 Injectors(22.5Lb) The car runs and sounds great, now when I rev it, it kinda pops and it feels like theres a lot of pressure and grumbling, is that normal? its sounds amazing, and it Accelerates furiously and Smooth. No more Hesitation, the Idle is better(though it jumps a bit sometimes), and it sounds cleaner while cruising. My major problem is that the MPG went way down, I get 19 on the highway at a very slow speed and I'm averaging 12.6 mpg... even with the few sprints on the highway..this is way to low.. should I take it back and have them check the ECM or what? I dont know whats wrong..I do need an oil change...but the air filter and PCV Valve are clean... any input will be appreciated

[rick lambert]

I'm gonna bet your 02 sensor is poop, typically the first place we check when mileage go down, could be the cause of your other problem too.

[Shawn_65]

hmm, after driving today on the highway..the milage isnt as bad as I thought, but I'll check out that sensor, thanks