have a 8.1liter gets 8.6mpg want to see if this would get better mpg?
519901
Yes my gas mileage increased 3.5 mpg at a the minimum. I probably would have gotten more but I have a heavy foot. I just sold my truck a couple weeks ago and no longer have any use for the superchip. If you want to purchase mine just let me know.... It's in perfect condition.
519902
Hard to say, my flashpaq increased my MPG by 2-3. Every vehicle flashpaq combo gets different results. Also depends on what settings you use with the flashpaq. Hope that helps
519903
hi tammy......you would see an increase in fuel mileage but in the range of like 3-5mpg. that, along with a clean air fulter or cold air 8ntake, and making sure your tire psi is correct according to the placard on the l/f door, you should notice a decent amount
748762
Positive ,I definitely recommend a cold air intake you got more torque more power I like tank s mopar and amazon !!!
592099
Ive got the 4.8 in my 06 Sierra. Had 3.23 gear ratio changed out to 4.10 and went to 265 tires from 245. My speddometer was way off. But with this i was able to change vehicle settings for changes i made. It tells me im averaging about 17mpg. Thats up from between 14-15 befor the changes ive made. Not too sure how acurate it is tho because my speedo and odometer seem to still be off a bit. Oh, also be nice to know, for my GM vehicle i have to pull 5 fuses under the dash and 4 more uner the hood for changing the vehicle program settings. Kind of a pain but not really all that hard.
1776583
It will fit very easily and nicely. It's difficult to gauge the MPG since I did a few mods (K&N; intake, Edge programmer, BBK throttle body, Accel COPs), but altogether on a trip from Alaska to Texas I averaged 19 MPG when I finished. Now I tow a lot on short distances and I get an average of 16-17 MPG.
1047853
Can't speak on 4.0 but my 3.8 (08) it made a huge difference! Shifting problems were solved. Better acceleration and highway speeds. Definitely made a better vehicle to drive.
1933764
I can't give you the perfect answer but my mpg went up about 1.5 in the city and about 2.5 to 3 on the high way and the truck has more throttle reponse
1874245
I would recommend you getting a tune. The factory tunes run lean as it is so I would seriously advise you to install a tune to compensate for added air flow
1537079
On the economy setting expect 1-2 mpg gain. I run the tow setting and get the same fuel economy as stock with much more throttle response. Take into account I have an 07 3500, 5.9, 6 speed manual
1353868
On my 2012 HD Road King, with Stage1 (Heavy Breather intake with 4" Rinehart pipes), the gas mileage improved slightly. But I down already from the estimated 42mpg to about 38-40mpg with the stage 1 kit. I noticed only an extra mile per gallon if any. But also, since the bike ended up with more low-end torque, I had a tendency of cranking the throttle up at lower RPM which is harder on gas. You won't regret the performance increase. More Torque, and much smoother throughout the power band.
59943
on fuel economy mode no change in mpg (same) i run now 87 performance what a power diference lower end gets a lot of kick ,it realy shows serious power on 93 performance but i dont want to run 93 because of $ per gal so you'll be happy with 87,i got that unit just for towing i tow 6 k boat than it burns less fuel and pulls way better up hill here in new england would highly recommend cortex (only) nothing else ,my last truck dodge ram with flushpeg waist of money no change in power stay away cortex kicks a.. Buy it and enjoy it
1353870
Will loose about 4 mpg but bikes come lean from factory so it makes it run richer and cooler. Better for ur motor in the long run. Friend me on Facebook . David dabeast laws
1871176
I got about 1-2 mpg extra on the performance tune... with a gentle right foot. Heavy right foot... not so much of a gain!
1258798
lol maybe like 1 mpg avg . another thing is lost bottom end power but gained mid -high. I guess its got something to do with how the comp is programmed for stock intake diff air /fuel mix. im goin to try programmer to see if mpg improves.
1610221
I have noticed a couple mpg difference(+) it does tow better and if for some reason you want to use the performance it does make a differenceI would like to try other models just to see
1190387
Yes, you are good till going to another setting. Make sure you change back to factory before changing your battery(s) or getting a new inspection sticker. After either of them switch back again to MPG mode.
534062
I would say no for an upgrade. Unless your motor goes out or is making a lot of noise, it's probably not going to make a noticeable difference.
866162
Sorry, but I returned the item because I did not notice any difference w/ my mpg's. I also had and returned the k&n intake system. Both were installed at the same time and taken off at the same time. Hemi's are just horrible on gas!!!