I am mostly considering this to restore MPGs lost due to adding 35" tires. Did anyone have any luck in increasing MPGs using the fuel saver tune?
861467
Hello, it all depends on driving style. This definitely has the ability to increase MPG. Its not a huge amount though, so justifying the purchase simply for MPG might end up being a wash.
861468
The company claim it will increase fuel mileage but my experience is bigger tires less fuel mileage the tries weigh more there for more work for the engine to turn them and also now you are geared a little higher sometimes that causes a drop in mileage. Another thing to consider before purchasing is elc device are hard to get reimbursed so if you are considering trying and if it dose not do what you want it to do retuning it that could be a problem unless there is something wrong with the devise.
973397
I have noticed some level of difference but was not much. Best tune for my 2009 jku is 87 octane. And I was able to make some adjustments to s ok me things like fix my speedo for larger tires, make lights come ok NE at certain times. It has features besides the performance. If you seek performance only .....not sure how significant it will be in your case.
59947
I didnt see much mpg gains! Maybe 1mpg! There is several different tunes 89 octane and 91 depending what u want!
1960471
I don't have any problems using the octane booster, no spark problems or exhaust dust. I'm tuned for 95 octane and I just use 91 with the booster. But I do use the whole can per fill up, if that makes a difference.
54480
Maybe letting more air in will increase mpg slightly but it's mainly for adding power. Sounds awesome and u feel the car pull more.
1871171
I have a 2012 F-150 Ecoboost with an AFE intake on it. I managed to pick up about 2 mpg on the highway with the SCT tune. That's the performance tune, not the economy one. In town, I haven't noticed much but I also have a heavy foot so I'm not surprised.I'd gauge your potential mileage based on your driving style. If you're in town and heavy on the pedal, it might actually get worse or just not improve. If you're doing more highway and you know how Cruise Control works, you will probably pick up a few MPG. A recent trip from Chicago to Michigan had me doing 22mpg, better than my truck has ever gotten before. That was with the cruise locked in at 75 most of the way, running 93 octane and the performance tune. I have a 2012 F-150 Ecoboost with an AFE intake on it. I managed to pick up about 2 mpg on the highway with the SCT tune. That's the performance tune, not the economy one. In town, I haven't noticed much but I also have a heavy foot so I'm not surprised.I'd gauge your potential mileage based on your driving style. If you're in town and heavy on the pedal, it might actually get worse or just not improve. If you're doing more highway and you know how Cruise Control works, you will probably pick up a few MPG. A recent trip from Chicago to Michigan had me doing 22mpg, better than my... » Read More I have a 2012 F-150 Ecoboost with an AFE intake on it. I managed to pick up about 2 mpg on the highway with the SCT tune. That's the performance tune, not the economy one. In town, I haven't noticed much but I also have a heavy foot so I'm not surprised.I'd gauge your potential mileage based on your driving style. If you're in town and heavy on the pedal, it might actually get worse or just not improve. If you're doing more highway and you know how Cruise Control works, you will probably pick up a few MPG. A recent trip from Chicago to Michigan had me doing 22mpg, better than my truck has ever gotten before. That was with the cruise locked in at 75 most of the way, running 93 octane and the performance tune. « Show Less
276706
You must have an off road tuner to get better fuel. Please call me for more details--Thanks--DJ 870-580-0940
881473
Lol and to answer your actual question.. I did not lose mpg , you should gain 2-5mpg. Sorry
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
2076102
I have had this programmer on my '96 7.3 for four years. Never a problem, and it does improve the performance . I haven't noticed any better fuel mileage, but it does improve shift points when towing. I wouldn't recommend using it on the higher settings without a full set of gauges -- EGT, Boost, and Transmission temp at a minimum. I put in an extra transmission cooler just to be safe. Running at higher power settings puts extra stress on the engine and tranny and makes things run hotter. Running synthetics will also help keep the heat down.
1967245
I have a 2010 JK with cold air intake and larger tires and it did make a noticeable difference. The shift points have changed and at freeway speeds I am not having to floor it to make it up some hills. The throttle response has improved too, not a kick in the pants difference but one that you can tell. As for mileage, I measured it for 3 weeks before I programmed and I was getting about 17.1 mpg after the tune I was getting 19.3 mpg. I drove it the exact same so I can say with 100% clarity that for me it did improve the 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
1021592
the literature says it does but I've never used it. I have only used the first two programs the economy ant the number 2 for towing. I noticed a slight increase in power but not better fuel mileage in economy although I haven't been able to take trip to road test it, I've just driven it back and forth to work in winter using fuel to warm it up (I live in North Idaho). The tow program gives significant increase in power and fuel is still the same. I average about 15 empty hand calculated. I haven't tried the performance program yet I'm still playing with it.
747027
Better throttle response. Gas mileage goes down about three per gallon. You need to add the throttle spacer and possibly stainless steel dual exhaust for best performance.
1697423
And using the fuel saving program will and only MESS UP YOUR TRANSMISSION! TRY IT :)
881472
That doesn't sound right. I'd double check the vent tube and oxygen sensor. At the very worst you would not lose mpg, only gain hp.
1353863
At first I noticed that it dropped from around 40 to 36 or so. But that may have been due to me twisting the throttle harder because of the performance gain. Since then my mpg have come up to average around 37. But the reduced heat and smoother engine operations are worth the small drop in mpg in my opinion.