Switching tunes

[Dkyacht]

The other day I tried switching the tune on my 5 star tuner from 87 performance to 87 economy. It failed and said to restore to factory tune, after restoring I tried the 87 economy tune again and it worked. Do you have to restore back to factory every time you want to switch or was it just a random bug?

Dave

 

[Hockster]

The other day I tried switching the tune on my 5 star tuner from 87 performance to 87 economy. It failed and said to restore to factory tune, after restoring I tried the 87 economy tune again and it worked. Do you have to restore back to factory every time you want to switch or was it just a random bug?

Dave

When you add a tune or change a tune you should have a battery charger on your battery. It will not work if it sees a low voltage. Make sure everything is shut off while doing the tune...

 

[BIRDMAN]

YES. Restore to stock, then upload the other tune. You cannot jump from 1 tune to another and like Hockster said, hook up a battery charger whenever possible. If the battery gets low while loading the tune you are S-C-R-E-W-E-D

 

[RatedSVT]

YES. Restore to stock, then upload the other tune. You cannot jump from 1 tune to another and like Hockster said, hook up a battery charger whenever possible. If the battery gets low while loading the tune you are S-C-R-E-W-E-D

Just wondering for future reference, but why would he be screwed?

 

[CrownOffroad]

Good info! Just got my tuner and the performance tune has led to an extremely heavy foot! So in light of that, was going to install the econo tune but never occurred to me to hook up charger. Good call guys!

 

[Dkyacht]

Thanks for the info guys, I'm a little disappointed however. Going back to stock then back to a tune is a 45 minute process. I was told that once you did the 1st one where it backs everything up it gets much faster.

Dave

 

[Dkyacht]

Good info! Just got my tuner and the performance tune has led to an extremely heavy foot! So in light of that, was going to install the econo tune but never occurred to me to hook up charger. Good call guys!

I did a test a few days ago comparing fuel economy between the 87 perf and 87 econo on the same highway over a 85 mile stretch. Cruise control set the entire time both ways at 70 I got a average of 13.1 on the perf tune and 16.3 on econo tune. I didn't expect that big a difference. Btw same 85 mile stretch, just going North and south with no wind to speak of.

Dave

 

[TheJoker]

16.3 mpg is what I get without a tuner. I'm wondering if I would get the same result as the performance tune, by simply selecting tow/haul mode?

 

[Dkyacht]

16.3 mpg is what I get without a tuner. I'm wondering if I would get the same result as the performance tune, by simply selecting tow/haul mode?

Are you 5.4 or 6.2??

Dave

 

[BIRDMAN]

Just wondering for future reference, but why would he be screwed?

Truck will go in to limp mode and he would need SCT to send a recovery file. Ford computers wouldn't even be able to read and reflash

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