Well I've sifted through plenty of threads on the superchip between this site and another but the thing I can't seem to pin down is how much of a mileage increase there is, if any. I saw zman's thread about how he had the hypertech and was thinking bout swaping to superchips. Got one and then never really went further than that. I tried the hypertech P3 two years ago and was not happy.

Here are my questions.

1. Who has the 3815
2. What kind of mileage increase are you getting with mileage tune, 87 tune, 91 tune.

90% of the trucks next two years will be highway.

Thanks in advance,
pcfixerpro

 

i have never tried anything but the performance tune on the 3815. i seen no gains in mileage.

i had the hypertech max energy first and got about 2 more mpg's. on the 91 tune. but less power.

tried the jet chip stage 2.power about the same as max energy. never kept it on long enough to check mileage.

 

I have the Flashpaq 3815.

With the "Economy" 87 octane tune, I got about 0.5 MPG better on average after several fill-ups (six or more). Even if it wasn't 0.5 better, it was always at least slightly better than the stock tune. It ranged from approximately a few tenths better to 1 MPG better, but the average was about 0.5. Sorry, didn't record exact numbers, but I always use gas from the same Shell station.

On the performance tune, I have noticed anywhere from 1 or 2 MPG difference. I used to get 9.5 to 10.5 during the winter in town, usually closer to 10. I am now getting 10.5 to 12. The number I see the most is usually very close to 11.5.

Keep in mind I have a lead foot, and get onto the interstate a lot for short stints (near WOT to merge into traffic most of the time). 95% in town, 5% highway. I do admit, I'd probably get better mileage if I drove the same way I did before the tuner, but it added so much more to the butt dyno, I can't help but feed her fuel now...

There is a new tune available (4 total now) that you can download (for free) instead of their "Advanced Data Acquisition Package". Its called the Mileage XS tune, from the Flashpaq's little brother tuner of the same name. I haven't tried that yet, but its supposedly even better mileage.

 

i have the 3815. when my truck was stock and it was set to 87 octane i saw about a 2-3 mpg increase and in 91 i didnt get any mpg increase. now that i have bigger tires and other mods, the 91 setting gets me about 1 mpg increase and the 87 gets me nothing.

 

Good info guys! Thanks

 

your a sissy and can't handle anymore power

 

I use the 3815 and got a decent increase in power on the performance tune, but no help with the mpg's.

 

lol, not after the power, after the mileage

 

then buy a ricer pansey boy

 

i have the 3815 got lots of power from it mostly because i had the death flash best mod thus far