4th Gen LS1 MPG's?
#141
TECH Resident
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Before I changed fuel filter plugs and wires, I got 160 max a tank. After the tune up the most ive gotten is 244 to a tank all highway cruise set at 85 haha.
94 T/A A4 only mod K&N CAI
94 T/A A4 only mod K&N CAI
#142
#144
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Well I get 16-17 MPG in the city, but I have 2.73's. Maybe you can blame the gas mileage on your 3.23's? Or maybe if you drive in DR's you can blame it on that.
Could be other things, fouled plug, bad wires, fuel filter, air filter.
#146
TECH Fanatic
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Correct, except you forgot to mention that its the ONLY way to get a true fuel economy reading. Especially with GM fuel level sensors, but even on something more accurate. Miles per tank would only be accurate if you filled it till the pump stopped and ran the car till it stalled out, then rolled into the gas station.
#147
TECH Enthusiast
Join Date: May 2005
Location: Nashville, TN
Posts: 594
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Not to bring this thread back from the dead...but I just did a trip from Huntsville, AL to Atlanta, GA, then to Nashville, TN, and back to Huntsville, AL and I averaged right around 27mpg round trip. That includes a few hard pulls playing around on the interstate...........All my driving was highway and Interstate...no city driving at all. I was pretty happy with that mileage
![Thumb](https://ls1tech.com/forums/images/smilies2/thumb.gif)
#151
Launching!
iTrader: (1)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I once got 33 mpg on a 60 mph cruise from Springfield to Kansas City. Next to no traffic and a tail wind in my favor. I didn't believe the Scan Gauge reading so I went and filled up. Sure enough! That's my personal best..and it only happened once. Strictly highway I average 29-31. Strictly city is somewhere in the neighborhood of 17. I've checked it at the pump religiously since I bought the car and the worst I ever got was 19 mpg, which was ~70% city/~30% highway, with the addition of a few races. On average, I normally get 26-27 mpg to a tank with mixed driving. I generally fill up around 350 miles, and it takes like 13 gallons.
#153
TECH Fanatic
iTrader: (8)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I'm always amazed by the results in these threads. If you're looking to buy a 4th gen F-body, you shouldn't expect to get 30 mpg. Is it possible to average that on one tank -- certainly (under the right circumstances), however that is FAR from the norm.
With the mods below (H/C/I/E/4.11/315 tires), I get around 12 mpg city and 20 mpg at highway speeds. Before all of the mods, I might have seen 15-16 mpg city and 22 mpg highway.
With the mods below (H/C/I/E/4.11/315 tires), I get around 12 mpg city and 20 mpg at highway speeds. Before all of the mods, I might have seen 15-16 mpg city and 22 mpg highway.
#154
TECH Enthusiast
Thread Starter
iTrader: (5)
Join Date: Jun 2007
Location: Flourtown, PA | Bethany, DE
Posts: 537
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I'm always amazed by the results in these threads. If you're looking to buy a 4th gen F-body, you shouldn't expect to get 30 mpg. Is it possible to average that on one tank -- certainly (under the right circumstances), however that is FAR from the norm.
With the mods below (H/C/I/E/4.11/315 tires), I get around 12 mpg city and 20 mpg at highway speeds. Before all of the mods, I might have seen 15-16 mpg city and 22 mpg highway.
With the mods below (H/C/I/E/4.11/315 tires), I get around 12 mpg city and 20 mpg at highway speeds. Before all of the mods, I might have seen 15-16 mpg city and 22 mpg highway.
I've tried to beat on my '98 during a full tank to see how low I could get it. I got it down to 12.5 MPG average romping on it from almost every light.
#155
Launching!
iTrader: (4)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I'm always amazed by the results in these threads. If you're looking to buy a 4th gen F-body, you shouldn't expect to get 30 mpg. Is it possible to average that on one tank -- certainly (under the right circumstances), however that is FAR from the norm.
With the mods below (H/C/I/E/4.11/315 tires), I get around 12 mpg city and 20 mpg at highway speeds. Before all of the mods, I might have seen 15-16 mpg city and 22 mpg highway.
With the mods below (H/C/I/E/4.11/315 tires), I get around 12 mpg city and 20 mpg at highway speeds. Before all of the mods, I might have seen 15-16 mpg city and 22 mpg highway.
![](http://rich82.smugmug.com/Stuff/Mobile-Stuff/i-8CQx7Vg/0/XL/2013-05-21_13-39-52-XL.png)
#156
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I use my 200 T/A A4 as my DD AND I use it for work. I work as an IT guy and travel between sites about 1400mi a quarter. I average 15mpg with full bolt-ons no matter what I do and I have 2.73's. Gonna suck going to 3.42's and a stall and cam.
![Cry](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_cry.gif)
#158
TECH Regular
iTrader: (5)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I get about 14 mpg combined with 4.10s (half highway, half city, 75-80 mph on the freeway.) I get 200-220 miles to a tank. Coming back from Vegas with cruise set to 70 and to and from SF I got 290-330 a tank. I'm considering switching to 3.70s (Currie doesn't make 3.73s for my 9") but I'm not sure I would see much of an improvement. I drive a ridiculous amount though so any small increase would be welcome.