What are 3.7's 6mt's dynoing with bolt ons/tune? Real world mpg?
12-29-2010, 10:03 AM
#11
2nd Gear Member
Join Date: Aug 2009
Location: Michigan
Posts: 312
I don't see why people are getting such low mpgs. I haven't reset my mpg average for about a month. In that month, I've done everything from highway driving, city driving, back country road performance driving, and I'm still at an average (with all of that) of 28mpg. I do have the 2.73 auto, but during all of that, I haven't been driving slow or anything. Been accelerating fast every time, and even managed to sneak a 14s 1/4 mile in there. (I'm praying to get something under 14.0, even a 13.99, before I make mods.) I have been using 89 octane, but I don't know if that could make such a drastic difference.
12-30-2010, 11:25 AM
#12
1st Gear Member
Join Date: Nov 2010
Location: Kentucky
Posts: 77
Zulu; the computer milage can vary several MPG from the real value in some cars. Much of that has to do with just how and when in the reset cycle you do what. It gets complicated. Mine is usually about 1.7 mpg off. Try checking a tank or two dividing the miles driven by gallons consumed. I hope they come out the same for you. I am glad you are enjoying your mustang. Keep the wheels rolling!
02-17-2011, 08:16 PM
#13
5th Gear Member
Join Date: Oct 2009
Location: Livin in NC, from Michigan...Yooper
Posts: 2,008
2011 V6 Mustang averages 48.5 mpg during 1000 lap challenge
http://mustangsdaily.com/blog/2010/0...lap-challenge/
http://mustangsdaily.com/blog/2010/0...lap-challenge/
03-24-2011, 11:33 AM
#15
1st Gear Member
Join Date: Nov 2010
Location: Oklahoma
Posts: 54
We have a 2011 V6 auto 2.71 gear Mustang. Our average with running 70% highway, 30% intown is 28-31 depending on how we drive. Just driving long trips on the highway we get 33-34 running 65-70mph. Daily back and forth with no highway is around 23. We are about to swap gears to 3.55 or 3.73, add a BAMA tuner, add a axle back exhaust system so we will see what happens.
03-24-2011, 03:33 PM
#16
5th Gear Member
Join Date: Oct 2009
Location: Livin in NC, from Michigan...Yooper
Posts: 2,008
You will see a decrease in that mileage for sure..I run 3.31, in 5th it's 2500 PRM at 62 cause if I drop into 6th doing 62, goes below 2000...LUG, so I get around 30 on highway at 70 to 72 at 2150 RPM in 6th with no tune, just a Airaid CAI and Borla type S
03-24-2011, 04:03 PM
#17
2nd Gear Member
Join Date: Oct 2010
Location: Washington
Posts: 192
2011 V6 Mustang averages 48.5 mpg during 1000 lap challenge
http://mustangsdaily.com/blog/2010/0...lap-challenge/
http://mustangsdaily.com/blog/2010/0...lap-challenge/
03-24-2011, 06:38 PM
#19
2nd Gear Member
Join Date: Oct 2010
Location: Washington
Posts: 192
I think they've figured most modern day cars with coefficients in the low .3 range end up at around 45mph for best efficiency, assuming the gearing and motor are optimal for testing at that point (and maybe a bit higher if they are slippier through the wind). They might have figured that it was worth it for them to push it closer to 50mph if they determined the motor had the ideal amount of torque and hp to do so.
I used to have a lifted Wrangler that that had a coefficient like a brick on stilts, so any sort of speed and that those mpgs just tanked.
I used to have a lifted Wrangler that that had a coefficient like a brick on stilts, so any sort of speed and that those mpgs just tanked.
Last edited by sketchy00; 03-24-2011 at 06:45 PM.
03-25-2011, 09:57 AM
#20
5th Gear Member
Join Date: Mar 2006
Location: ATL
Posts: 2,955
Correct me if I'm wrong 6+6, but they didn't ever mention what gear they were running in, right? I'm assuning 6th on a 2.73. I know those engineers probably figured out the perfect drag-coefficient sweet spot against the fuel input rate and the efficiency of the motor, and came up with around 50mph. 6th in a 2.73 is under 1,200 RPMs. Yikes. No hills please. :-)
