Supercharged Gas Miles
Thread Starter
Instructor
Joined: Jul 2008
Posts: 173
Likes: 0
From: Victoria Texas
Supercharged Gas Miles
I know when you have that much power (500+ HP) coming from a blowed LSX motor, gas milage doesnt realy matter. . .but im curious! So what kind or gas milage are you all getting out there with blowers.
Melting Slicks
Joined: Mar 2007
Posts: 2,158
Likes: 1
From: Always In Front, Colorado
I will see 22 city with very sprinted driving, 29-30 on the interstate @ 80 mph. This is calculated with gallons and miles. As my DIC will read around 24 City and 33 hwy.
Little P1 @5-6 PSI and 540 RWHP.
Little P1 @5-6 PSI and 540 RWHP.
Le Mans Master
Joined: Sep 2001
Posts: 8,840
Likes: 43
From: State of Confusion.
In town, 24-26 mpg
On the highway, 28 - 32 mpg @ 65-75 mph
These were figured by me dividing miles by gas usage, not by the DIC. Sometimes I've seen the DIC go into the high 40's when decelerating, so I did it manually to know for sure.
I've got an A&A Vortech SQ V2 S-trim and headers. My car is putting out 500-525 rwhp through a stalled A4 too, so to say that I'm Happy with it would be an understatement!
On the highway, 28 - 32 mpg @ 65-75 mph
These were figured by me dividing miles by gas usage, not by the DIC. Sometimes I've seen the DIC go into the high 40's when decelerating, so I did it manually to know for sure.
I've got an A&A Vortech SQ V2 S-trim and headers. My car is putting out 500-525 rwhp through a stalled A4 too, so to say that I'm Happy with it would be an understatement!
Just an Ole Surfer Boy
Joined: Nov 2001
Posts: 3,194
Likes: 0
From: Timing is Everything The Jersey Shore
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St. Jude Donor '04-'05-'08-'09-'10-'13-'14
Yes, but what rear gears do you guys have?
Last edited by Crusher; Sep 3, 2008 at 09:42 PM.
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Burning Brakes
Joined: Jun 2006
Posts: 835
Likes: 0
From: fayetteville NC
I guess I am getting screw I see 12MPG in the city and 16MPG hwy
540HP 520TRQ
ECS super charger, methanol install by them. I got the stock gears
DTE bracket, suspension, clutch, flywheel tune by ECS I don’t know what r other people talking about but I am the only one whit this numbers what’s wrong I am worried now.
540HP 520TRQ
ECS super charger, methanol install by them. I got the stock gears
DTE bracket, suspension, clutch, flywheel tune by ECS I don’t know what r other people talking about but I am the only one whit this numbers what’s wrong I am worried now.
You beat me to it
USMC (retired)
Joined: Aug 2004
Posts: 3,268
Likes: 7
From: Wimauma FL
A4 3.42 FLP Lvl 5 tranny with 722rwhp/664rwtq and the best I saw without ever stomping on it was 21mpg on the DIC and that was on a 150 mile trip. If I stomp on it though I have seen it as low as 14mpg.
Melting Slicks
Joined: Nov 2006
Posts: 2,836
Likes: 8
From: Still the Fastest (still running) Stock Bottom End Blown LS1/ 2010 ECS CC 10.50 CHAMP Hamilton, NJ
My last trip was 25.6 driving from NJ to VA, racing at the nationals about 15 passes and back home to NJ. 
Thread Starter
Instructor
Joined: Jul 2008
Posts: 173
Likes: 0
From: Victoria Texas
I guess I am getting screw I see 12MPG in the city and 16MPG hwy
540HP 520TRQ
ECS super charger, methanol install by them. I got the stock gears
DTE bracket, suspension, clutch, flywheel tune by ECS I don’t know what r other people talking about but I am the only one whit this numbers what’s wrong I am worried now.
540HP 520TRQ
ECS super charger, methanol install by them. I got the stock gears
DTE bracket, suspension, clutch, flywheel tune by ECS I don’t know what r other people talking about but I am the only one whit this numbers what’s wrong I am worried now.
LOL i dont blame you. . .thats weird.
Burning Brakes
Joined: Dec 2003
Posts: 855
Likes: 0
From: Tampa FL
I guess I am getting screw I see 12MPG in the city and 16MPG hwy
540HP 520TRQ
ECS super charger, methanol install by them. I got the stock gears
DTE bracket, suspension, clutch, flywheel tune by ECS I don’t know what r other people talking about but I am the only one whit this numbers what’s wrong I am worried now.
540HP 520TRQ
ECS super charger, methanol install by them. I got the stock gears
DTE bracket, suspension, clutch, flywheel tune by ECS I don’t know what r other people talking about but I am the only one whit this numbers what’s wrong I am worried now.
Melting Slicks
Joined: May 2002
Posts: 3,210
Likes: 1
the most accurate way to calculate gas mileage for your FI car is to reset your trip odo at your next fill up. then when it comes time to fill up again take the miles you've driven and divide them by the gallons you just purchased.
using the DIC is not accurate because almost all FI cars have larger injectors or their tabels are scaled differently and that will screw with the stock injector calculations our cars use.
doing the math above I see anywhere between 12-14mpg with a mix of city and highway driving. On the highway best I've seen is a little over 300 miles out of 16 gallons of gas which is about 18mpg. I've never been able to just cruise threw a tank of gas w/o getting into boost at all so I'd guess I could maybe get 20-21mph on the highway if I drove like a *****.
edit: I've got 96# injectors, stock 3.42 rear, stock sized tires & twin fuel pumps...
good thing I didn't buy this puppy for fuel economy!
using the DIC is not accurate because almost all FI cars have larger injectors or their tabels are scaled differently and that will screw with the stock injector calculations our cars use.
doing the math above I see anywhere between 12-14mpg with a mix of city and highway driving. On the highway best I've seen is a little over 300 miles out of 16 gallons of gas which is about 18mpg. I've never been able to just cruise threw a tank of gas w/o getting into boost at all so I'd guess I could maybe get 20-21mph on the highway if I drove like a *****.
edit: I've got 96# injectors, stock 3.42 rear, stock sized tires & twin fuel pumps...
good thing I didn't buy this puppy for fuel economy!