Calling all Supercharged 5.0, whats your fuel mileage

[jojobee]

Hi,

I just got my 2012 GT with a Roush TVS and 85mm pulley tuned by VPM and my fuel usage went up by 25%.

With about the same style of driving as before my fuel usage is now 25l/100km (9.4 miles per gallon if converted correctly) based on about 60% highway and the rest city.

Post your fuel mileage, hp and tuner.

520HP/500TQ/9.4MPG

Tks

 

[JDM74]

520 HP/415 tq

21 mpg.

 

[JerryC]

20mpg combined city hwy
26 hwy

524/497

 

[jayman33]

604/500
2.3 whipple

24hwy/12city

Lund tune

 

[Mystickeith50]

604/500
2.3 whipple

24hwy/12city

Lund tune

Yup

 

[stkjock]

Seriously in tech?

Moved

 

[Doug M]

trade it on a Prius. I would.

 

[JeremyH]

Smiles per gallon? lol

 

[Doug M]

lol.

 

[Herknav]

Hi,

I just got my 2012 GT with a Roush TVS and 85mm pulley tuned by VPM and my fuel usage went up by 25%.

Did you think the performance was free???

 

[Doug M]

^^so freaking true!

 

[bmaxwell]

LOL @ smiles per gallon

 

[jojobee]

Your all doing 50% more milleage than me with about the same mods.
I do not believe its my driving, difference is too much.

Anyone has an idea on what could cause high fuel usage..(btw Justin @ VMP mentionned that nothing in his tune could cause an increase in fuel demand...)

So the question is ...wtf is causing all this gas to get dumped ?
According to Justin my datalogs are ok!

 

[08StangGT_CS]

Your all doing 50% more milleage than me with about the same mods.
I do not believe its my driving, difference is too much.

Anyone has an idea on what could cause high fuel usage..(btw Justin @ VMP mentionned that nothing in his tune could cause an increase in fuel demand...)

So the question is ...wtf is causing all this gas to get dumped ?
According to Justin my datalogs are ok!

Right foot was the culprit in my last blown car.

 

[skwerl]

Justin tuned mine and I get about 12 mpg (20 hwy).

 

[DTony]

I just made 670/503 @ 11 lbs of boost. Last week on the highway cruising 70 that car got 26~27 mpg. I really dont have any pure city driving numbers. Since getting the new motor and 3.31 gears the car gets better mileage than when it was stock.
The tuner is CRT Performance.

 

[stkjock]

Anyone has an idea on what could cause high fuel usage..(btw Justin @ VMP mentionned that nothing in his tune could cause an increase in fuel demand...)

Where do you think,he added power comes from?

More air + more fuel = more power. It's not rocket science.


Now 9 does sound low are you using the trip computer or are you doing it manually?

 

[sean858]

I'm pulling in around 16mpg doing nothing but stop and go city driving. Car made 550/478. The 3.73 gear really kills the mileage and it's only worse with the blower. I was doing 17.5mpg before the blower.

 

[Seer]

Just to use as a comparison, my 750rwhp 2012 GT500, gets the following:

14 city / 22 highway

 

[ChiDiddy]

i have the same issue as OP but then again most my driving is city and i have big heavy wheels.