What's the mpg gain after using this tuner and setting it to fuel economy mode? Also, what gasoline grade do you have to use after the tune up?
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
59944
final gasoline grade depends on which tuning you choose.I chose the 87 octane tune and have not really noticed any gas mileage inprovement. I combined the tune with a air intake system and the truck has move punch but not better gas mileage.
59945
final gasoline grade depends on which tuning you choose. I chose the 87 octane tune and have not really noticed any gas mileage inprovement. I combined the tune with a air intake system and the truck has move punch but not better gas mileage.
59946
I honestly think that the stock tune gives you better mpg than the fuel saver tune. An you can run any gas. It gives you the octane suggestions for whatever tune you set it on
59947
I didnt see much mpg gains! Maybe 1mpg! There is several different tunes 89 octane and 91 depending what u want!
59948
I was using 87 with the tune then went to 93 and It seemed to be better power and mpg with 87 but idk my mpg but I can tell I get better though
217817
I put this tuner on a 2007.5 Silverado with the 5.3. Already had a K&N; cold air on it. Put a lift on truck with bigger tires and was getting 11-12 mpg. After the install of Bully dog, I am getting 14-15 mpg. Really just wanted tuner to help adjust trans after bigger tire install but gas mileage is a definite win. Also reads codes on engine.
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.
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.
1353869
You will sacrafice fuel milage, mine went from 42 mpg to 38 mpg. But worth it to me. I've made mods to the engine and changed exhaust 2 or 3 times and the Auto-tune keeps it running at peak performance. No more costly dyno after mods!
45181
For me the best setting is "Towing and Trailering. Slight increase in HP and increase in MPG. The second setting I think is 80 HP. Faster off the line, but MPG is not as good. The third setting is 140 HP, but is a diesel burning and requires 4" exhaust system. Not worth the expense to me. I have no experience using the I1000 with gas engines.
592007
I have a 08 JK with 33" tires and a 3" lift. Before installing, first and second gear would wind out nearing red line if I was driving somewhat hard. After installing, my shift points were changed to make this a more smooth takeoff. I have been running mine on the 89 octane setting. I have been using this for about 10k with no issues. I also programmed the size of my new tires in to correct the speedometer to adjust in tire size. There wasn't much difference since I am only running 33" tires. On the hwy I am getting between 17.5 and 18.2 mpg running 70-75 mph.
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.
664755
Gas mileage seemed to get better when on the highway. Took a trip a couple weeks after installation and got around 18.5 generally. The increase in torque was noticeable. Fuel mileage around town has stayed at 13 this winter however(cold climate).
1185282
As far as both questions go I can't give you an exact number on both gas mileage and horsepower. I did feel an increase in power since the intake does make the engine breathe a hell of a lot better. As far as gas mileage goes I did see an improvement but couldn't tell you how much as I didn't pay attention to that after I put it on. AS far as the intake itself. It sounds amazing.
1047861
I went from 10mpg to 17 after using it. 2008 jk on 35's and 3.73 gears. 150-170 miles a tank to 250-280 miles per tank.
1429858
There is no horsepower gain if you just add an air intake. You will feel a much better throttle response and I did gain about 0.7 mpg. Very easy to install, highly recommended!
1654326
I cannot speak for your engine, however with my 5.3, even with the program now removed. I still have to run 93 octane to keep the truck from skipping. Didn't do that before the programmer. Get a custom tune. You'llBe much happier
366689
Sorry for the delay in responding. The tuner comes in a hard plastic case,with the cord to plug into trucks computer and some basic instructions. I wanted it for better fuel efficiency and the instructions don't make any suggestions on what tuning options effect what. But the diesel blogs are good for that. Best of luck!
530893
On the highway, with the gas saving tune I gained a couple mpg. It does really good with premium fuel. In the city it's not that great. If you drive a lot of highway/freeway miles then it's worth it. I put dual flowmaster super 40s and a K&N; on it as well and if I drive right I can get 18+ mpg on the highway
1654325
I cannot speak for your engine, however with my 5.3, even with the program now removed. I still have to run 93 octane to keep the truck from skipping. Didn't do that before the programmer. Get a custom tune. You'll Be much happier
540476
The fuel mileage is all dependant upon your foot.... Before I got this car I had a Honda Fit which averaged 25 mpg after getting the K&N; on this car I could beat that mileage with almost double the engine and weight as long as I have a light foot on the pedal! But if you are having fun with it obviously your fuel economy will be considerably less. So I e