I just purchased a used Evo off of a friend I have a question.

The guy I got it from said that he had changed some of the peramiters in the tire size and fuel/air mixture and maybe others, and I was wandering if the evo saved what he had done or was it changed back to the canned tunes by Edge when he returned the truck back to stock.

By the way nothing seems odd on my truck and I love it. By the way do most of you set them on level 2 and leave them?

 

The Evo will not keep those changed parameters. All tunes are kept canned and you have the option to use custom options (tire size etc.) or not each time you load a tune. I usually run level 2, tow tune, all the time unless gas is at a decent price and then I use the 93 perf.

 

Thanks for the quick reply. I was figuring that it would not keep the changes but I thought I would ask the people who know.

I have not tryed the 93 per. tune yet and probably will not. Gas is to expensive and my truck would probably not know what to do with 93 in it.

 

Your truck will like 93, trust me. The 93 tune is better than the tow tune and it is more fun IMO. To get 93 though it costs 20 cents more so I know it's expensive but its fun to run every once in a while. For me to run 93, it costs an extra $6/fillup.

 

$.20 more for 20x the fun? I think so! try it out on level 3.... you have to at least once. Trust me, you won't go back.

Whats more? I had an 02 FX4 and got 2 mpg better on the highway... that will more than pay for the difference in fuel price.

 

If your average MPG (combined highway and city) did increase by 2 MPG, then you are correct. Running 93 octane will pay for itself.

The example below is based on my truck. The 87 octane numbers are real.

87 Octane
Miles: 11499.1
Gallons Used: 661.977
Average MPG: 17.37
Fuel cost: $1,709.67
Average cost per gallon: $2.58
Cost per mile: $0.1487

93 Octane
Miles: 11499.1
Gallons Used: 593.655
Average MPG: 19.37
Fuel cost (assume $.20 more): 593.655 * $2.78 = $1651.95
Cost per mile: $0.1437

 

I'm going to just say that the "custom parameters" MAY have been saved. It all depends on what the Edge does when it reads YOUR stock tune and saves it. The fact that he changed his tune back to stock NOT get rid of those "custom parameters". If he had reloaded a tune, then opened the Custom Options Menu and scrolled to and selected "Load Previous Settings", they would have been loaded again.

Now, the Edge has to save YOUR stock tune when you use it to program your vehicle. That act may or may not have destroyed the "previous settings" file. If you skipped the Custom Options Menu, then you got a canned tune that used the TS and GR that are in your PCM's VID. But, if you open the Custom Options Menu and select "Load Previous Settings" as your first step, then you MAY have gotten his. My gut feeling is that is what would happen. If you open the Custom Options File and create your own custom settings though, they will replace his and will become the new previous settings file.

- Jack

 

All I did was change the tire size and from that I would say it earased every thing because it was showing a very small tire size and he was running a 33.

By the way I will say this again this has to be the best $150 I have spent on my truck. This thing really helped in the towing department, which is why I got it in the first place.

 

$150? Wow. It is worth every penny at the full price IMO.

 

It was my cousins and he traded his truck for a 250. Very cool of him to cut me the deal he did though. Now its time to do new tires and air bags, being that I save a good bit on the tuner.