Your best highway MPG?

[JohnnyTruant]

Of course, I was going down hill and had a bit of a tail wind, but for about 30-45 seconds I had a 10 with better gas mileage than a Prius

 

[faslane505]

with my last H/C full exhaust combo. at 62 mph (in 6th) i could get 23mpg

 

[TUGBOAT TRASH]

25.6 MPG ON MY 05 RC AND 18.9 ON MY 06 RC on the highway long trips
with a few mods on both.
Pretty much around 13 in the city.
And 4 MPG with thrusters at max

 

[Cruster]

Broke 20 once on the flat at 60 with AC on. Around 16.5 with ups and downs and steady speed. About 11 around town. About 8 if I'm driving for fun and punch it here and there.

 

[Geodriller]

best i got on a trip was 16.9 mpg on 170 mile trip. most highway, and got on it at least 4 times. usually average 11-14 around town

 

[Slitherbeast]

when i am just highway driving, i will see 300 miles out of a tank! usually get 250 miles normally. it gets as bad as 150 if i am running hard!! i pulled my 19' camper trailer with it and the difference was about 2 mpg .

 

[redice2]

have drove it 3 times from TX to NY and visa versa math says i averaged about 18.1mpg with all highway driving for 1800miles aprox. so i cant complain.

 

[1BADTRK]

22-23 on the Highway coming back from Panama GTG Last year

 

[VENOMOUS1 RACING]

Well sounds like 18 is a fair average on the highway at 70 driving normal. Much better than the 13 advertised on my window sticker:dontknow:

 

[Falcon]

When I go to Illinois, I will be checking actual MPG versus what the truck says. My estimate is for my trip (going there, driving while I am there driving back) will take about 300 gallons of gas. I would love it if I was way off.....on the extra side..haha.

 

[ram_vs_cougar]

LOl woul dbe nice to get close to the 20's man to LA and back to GA dam near 500 bucks for me.

 

[rbabody]

wow i wish 8.8 in town and im afraid to drive out of town due to loan for fuel that i would have to take out. When going on a road trip should i put the stock tune into it?? Have a 05rc k&n catless mids with magnalflow rear and sct tuner. My few trips on the interstate the best is 13.5. I have tested the computer and its been right on the nuts.

 

[evanandretti]

wow i wish 8.8 in town and im afraid to drive out of town due to loan for fuel that i would have to take out. When going on a road trip should i put the stock tune into it?? Have a 05rc k&n catless mids with magnalflow rear and sct tuner. My few trips on the interstate the best is 13.5. I have tested the computer and its been right on the nuts.

Don't take my word, but I would assume leave the tune. Should be running more efficient...?

 

[Thumperama]

I just did a run from McKinney, TX to Wichita, KS (393 miles), A/C blowing, Cruise set at 80 and I logged 16.5 mpg with a tail wind. Only used 3/4 of a tank. I usually get 11 mpg in town. The trip back I only got 13.5 mpg with a pretty brisk head wind. My Escalade doesn't get much better highway mileage than my truck. But it beats it in around town mpg by 4 mpg.

 

[big_ol_meat]

I get around 250 miles on a tank. The overhead,which is reset as soon as I get gas, said I was getting 19. The over head has never been close to being right. Every other week I get 18-21mpg according to the over head but the most I've had is 265 miles on a tank. Most are 230-250. When I do the math I'm between 8 and 11 mpg. Stupid over head and it's lies. I'd be curious as to who is following the computer mileage and who does it themselves.

 

[VIPR PWR]

I'm getting around 9.4 city.... the best highway was 14.7 going before the sct tune. Now I'm averaging about 270 or less on a tank hwy. Mine is a 05 qc ... My mods are sct tune, TB and a Suncoast w/shift kit valve body....
It appears that there is no comparison when comparing RC'S to QC's and different Mods. A true comparison would be trucks with the same configurations.....

 

[WOT]

My best ever was 16.5 from Arkansas to Dallas. I was doing 65 downhill and 55 uphill. I was really trying to get the best mileage I could by holding the pedal as steady as practical. Utilizing the cruise control always nets me worse mileage.

My typical highway mileage is around 13. I typically get around 9 in the city.

 

[00SVTStrike]

Has anyone noticed significant gains in MPG after tune??

Im sure at first the answer is a resounding no because you are on it all the time, but after the initial excitment and you try to drive a normal trip, has it imporved over stock??? :dontknow:

 

[VIPR PWR]

After the tune I would get a best of 12.4 mpg hwy, that was driving with a egg under my foot so I lost 2 mpg. Could not re-install my original stock tune( it was gone ?) The tuner sent me another stock tune, Still no better . Went back and forth a few times with the tuner and never could get an answer why!!!! There was a lifetime tune update included with the tuner,,, That is now worthless as he is no longer around and the company will not honor it. Some members know who I am talking about. I will only use the stock tune he sent , I don't trust any of his tunes....

Torrie @ unleashed is the man to go to based on his reputation.:rock:

 

[TXRamSRT10]

Well on avg... i set the TRIP button on 0 when i fill up and usually get 265 miles on a tank. (thats when the fuel light comes on)

This is with a mix of Hwy n city driving.