Just curious. Kind of new to the board. We just bought a 2012 V6 Convertible. Love, love, love it!! We got the 'Coyote' for the better gas mileage as we are driving it regularly, just wondering if we can get even better. Not interested in 'chipping' it for the races. The mileage so far is very good, can we get better?

 

Well, first off, you don't actually "chip" the recent generation cars. You can reprogram the existing engine management computer either by buying a tuner device with pre-programmed generic tunes, or you can have a custom dyno tune done at a shop.

Either method is going to require at minimum laying out $350-$400 for a tuner, and since the factory tune is pretty well optimized for mileage already, even if a tune could net you an extra 1 mpg, it'd take a good while to make back the cost involved.

Good driving habits and simple stuff liking keeping the tires properly inflated will pay off immediately and the up front cost is zero.

p.s. Hate to break this to you as well, but if you bought the V6, you don't have a "Coyote". That's the 5.0 V8 engine in the current ponies.

 

I also have a 2012 V6 M6 coupe. Mine came with the 2:73 rear end. I can set the cruise at 70mph and still get 31-32mpg.
I'm not sure what options came with your particular car, but if yours comes with a 3:31 you can change it to a 2:73.. Dont know why anyone would want to do that but it can be done, I'm looking to upgrade mine to a 3:55 soon.

I do know that using a Top-Tier fuel can help mileage and performance. I've been using nothing but Shell from the first day I brought the car home....
http://www.toptiergas.com/

 

Don't mean to interrupt but, skip the 355.1 and go to 373.1 you'll thank me
later.

 

Seconded. If you're looking to improve acceleration, 3:31>3:55 is not going to be a very big change. 3:31>3.73 makes more sense.

 

Like the original poster I had gas mileage on my mind when I came up with the 3:55's. I know the 3:73's are a popular choice. I thought 3:55 would be a decent balance of performance and MPG. I have no idea of where I can take my car to do the gear swap in south Texas Unless someone knows a specialty shop in Houston or S. Antonio. P.M. me guys so we dont hijack the thread if someone knows of a mustang shop nearby.... I dont trust the dealersteals too much.

 

I do mean to interrupt, and I would suggest 3.55 over 3.73. I'm actually using the 3.55s as well.

I did a lot of research into MPGs, acceleration, top-end and other factors when I chose my gears and they are perfect.


And the V6 engine is code-named 'Cyclone'.

 

Just a reminder the OP is looking to increase his gas mileage, and going to more performance oriented gearing whether 3.55 or 3.73 isn't going to help that, so let's not let the unrelated debate hijack his thread.

 

If that's the case, the OP should go with 2.73s.

 

Thanks. I kind of figured the factory tuning was designed to be pretty good. We just got it, and I know the mileage will get better as it breaks in a bit. Thanks guys.