11.4 with a faulty ECM!! gotta replace it threw a P0601! wont even idle if you erase the parameters it learned while driving, it idles now but when i disconnect the battery for 30 minutes it takes 50 miles to learn to idle again! LOL!

 

Hi Guys, new on here.

My computer says 12.7 but that is with a lot of hauling and town. I manually checked my last tank (1/2 town 1/2 highway) and was getting about 13.9. BTW, my truck is a 02 QC with the 5.9L.

If I keep my foot out of it I can get 18-21 at 55mph, and 15-17 at 70-75mph.

Overall I am happy with it, not as good as my diesel but I wasn't expecting that.

I am hopefully going to be putting in my superchip today or tommorrow, or whenever it gets here.

 

2007 5.7 2 wd reg cab.3:92 rear auto.gibson super truck exhaust,helix throttle body spacer w/inlet tube and air max cold air system.all of these are made by street and performance electronics in n. little rock arkansas.i commute 60 mi round trip a day all highway and average between 19.7 and 20.2 mpg on 87 oct.plan on adding superchips flaspaq soon.

 

'07 qc 4x4 thunderroad 20's 392 gears castrol syntex seemed to add a half mpg then flowmaster dual and elimination of 1 resonstor gave about 1.2 mpg so at 9200 miles on the truck avg 17.3 highway and 13.7 city (of course i get really bad mpg when i put premium gas in it 'cause then i beat the crap out of it ) haha.sounds mean w/the new exhaust

 

04 1500 reg cab long bed with 4.7 and the computor says 15.4 most of the time, but have seen 16.1 around town. Why are you all getting such low mileage? I have no modifications and I'm not always easy on the gas pedel.

 

Brand spankin' new 2007 Hemi Quad Cab Big Horn. 200 miles on the odometer. Driving 60mph, she was showing just under 21mpg. On the highway running 75mph, she was getting 17.4. I'm a happy camper...


Donnie

 

i dunno maybe all my driving is uphill but i gotta tell you the meter on the overhead panel LIES my mileage doesnt change much when i drive like a sissy so i pretty much have fun w/my big red truck (sounds great too)

 

hey, donnie good luck w/the new truck if i got my meter to even show 21 mpg for 2 seconds i'd take a pic and look at it daily guess i just got a guzzler anyway enjoy and get some sound in that exhaust you'll be glad you did

 

Only have 1700 miles on the clock, 07 Ram 1500 with HEMI and MDS. Never had so much power, kicks the stuff out of the 01 F150 Lariate, man I love that POWER!!!
So far: 15 mpg all around, 23 to 25mpg highway according to the onboard computer going about 70. Sucks it down when going 90>>>>>>>>>>>&g t;>>> YEEEEEHAAAAAAAAAAA.

 

i just went 300 miles from NJ to VT going no faster than 67mph and got a computer reading of 19.5MPG, which means that it was probably actual of 19. WAY better than my 14-16MPG commuting everyday with some highway and some "city" (taking it out of gear on the long down hills helps tremendously!)