This is a 3 part question,
1. I have the very last version of the GDE non-compliant tune. I purchased the tune and then held off on installing it due to concerns about voiding the warranty. However, I am now ready to install it. Has anyone had issues with the newest version of EFI live not working with this now 3 year old tune?
2. I am probably going to buy the current GDE compliant tune and add the trans tune (I didn’t originally buy the trans tune.) Can I install the trans tune and use it with the old non-compliant tune?
3. Has anyone installed the new compliant tune and then flashed back to the non-compliant engine tune? Were there any problems with that?
Oh, of course, the non-compliant tune is for when I travel outside the USA.
Thanks in advance!
Thank you for that great reply. How do I know which firmware to download? Are you also using the last “old“ version of the tune?Hi Terry what I figured out over time is this, whatever firmware they last manipulated the tune with needs to be the same on the spade. You could install the firmware that was used and put the older tune in and it will work fine. The trans tune will work either way but you will need to purchase it from them. The problem I see, if you want to run the older tune you may need to have the trans tune with that same vintage firmware.
In the long run the only benefit between new and old tune files (and in my book it's a big one) is the older tune will turn off the ERG soot generator.
Do you still have the email they sent you with the original tune? It will have a white paper that will spell it out.Thank you for that great reply. How do I know which firmware to download? Are you also using the last “old“ version of the tune?
I do, thank you.Do you still have the email they sent you with the original tune? It will have a white paper that will spell it out.
FYI, I did exactly this in early 2021, after updating with the latest firmware on my AutoCal. The sequence of events went like this:Let us know how you make out. Good luck.
About 425 miles since tuned, I have set a new personal fuel economy record. My previous best for 450 was 31.7 and that included almost all interstate driving. This new record was with no interstate driving. There were a lot of hills and typical speeds ranged from 40 to 60 mph. However, while not interstate, there is not much stop and go driving on my regular route. My previous last 450 under the same driving conditions as the 33.3 was 26.5, which is an “apples to apples” comparison. I am planning a long interstate trip next month. I am looking forward to seeing how well it does then.
This (33.3 mpg) is almost as good as my wife’s Subaru crosstrek but she drives with a heavy foot. On the same routes she is usually at 35 mpg. I’m a more conservative driver than her. I’m sure it would be a little higher if I was driving her car. (She doesn’t like me driving her car or how I drive. I wish there was a way she could be a passenger of herself...)
It is still less costly to drive her car but not enough to park the Canyon again unless the disparity between diesel and gas widens again.
View attachment 9570
That‘s great numbers. I bought the GDE tuned about 4 mon; Ago. I find the mileage the truck reports is better, but when I hand calculate the miles traveled and fuel added from the pump. The Gde calculations have been 4-6 mpg off. My actual hand calculated mileage hasn’t changed enough to see any difference.Nice!
My wife has a plug in hybrid that goes 25 miles on a charge. I take her "golf cart" on short trips instead of my truck. Because we short trip that car in town a lot in EV mode, it is averaging 82 MPG at the moment. At a 5 cent per kWH overnight rate, it costs about 1 cent per mile in electricity to drive. Gotta love that kind of fuel economy these days.
Interesting. It has been awhile, but I hand calculated about 10 tanks of fuel and the DIC figure was a little optimistic, but not that big of a difference, about 1 to 1.5 MPG or so. This is with the older non compliant settings.That‘s great numbers. I bought the GDE tuned about 4 mon; Ago. I find the mileage the truck reports is better, but when I hand calculate the miles traveled and fuel added from the pump. The Gde calculations have been 4-6 mpg off. My actual hand calculated mileage hasn’t changed enough to see any difference.
The usual is 2.5 gallons filling slow, rock it, get another .3. I don't always rock it though, depends on the amount of fuel point savings and if anyone is watching, as it kind of embarrasses meI am about 900 miles since tuned and am seeing a little over 5mpg improvement. Next tank I will hand calculate and report back.
“There is about 2.8 gallons from first click to filling it to the brim, which involves rocking the truck to burp out the last bit of air from the tank. Ya, I am insane, but 75 cents to a dollar off a gallon adds up ”
I do this as well but don’t rock it. I just fill really slow after the first click and get about 2 gallons more.