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Has anyone had experience with the new GDE EPA compliant tune? I’m just curious. Knowing GDE, it’ll be great.
 

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My truck is finally out of warranty with 125k on her. I am anxiously awaiting actual users experience with this tune/tuner. I do like the idea of not having to swap out the PCM. What I am most looking for is the performance my truck lost when it was updated during the EPA settlement. Please post your results. An independent before and after same day dyno review would tell us all what we need to know before laying down $1,100+
 

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2015 Outdoorsman EcoD CC w/6.4' 4X4
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There has been a couple of people with their initial reactions near the end of this thread:
 

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I just installed the GDE EPA compliant tune on my 2015 ED with 30k miles. Have not had time to go for a longer drive, but first impressions are really good. Throttle repsonse is better, power feels a lot smoother.
 

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I just installed the GDE tune on my '19 Classic ED cc 2wd. The install went ok, no problems. I did not get any codes after the install, just a trailer brake warning when I first started it that has not come back on. My initial test drive is pretty positive, has much better throttle response and shifts quicker. It shifts into 8th gear on cruise when before it would not unless you were going over 60 mph. If you got up to speed and let it shift into 8th then set cruise it would, but after stopping then using resume it would stay in 7th. Glad that's fixed. The way it shifts now should help with the mpg's. Kicks down quickly when you step on it and just feels more responsive, which is what I was hoping for. Lag when taking off from a stop is much better. I will update after I get to put some miles on it. Overall, very pleased so far. Thanks to GDE!
 

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So I got to drive down to the beach this afternoon and thought it might be a good mpg test for the GDE tune. This is what I would consider mixed driving, lots of back roads with stop and go driving, almost no sitting in traffic. Note the avg. mph. Not sure if it is better than without the tune being it still has less than 1k miles. But whatever I still am pleased in that my old '07 Silverado CC 1500 4.8l 2wd got about 18-19 mpg on this same loop that I have driven many times. I expect I may see a small mpg improvement as it gets broken in and the tune learns a bit more, if they do that. I will be towing my boat with it for the first time this weekend, I will post my impressions of that soon. 20200807_225719.jpg
 

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Towed the boat to our favorite ramp today and to say I'm impressed might be understated. Very smooth, never needed more than about half throttle to get up to speed, major difference between the ED and my old Silverado. My sister in law in the back seat said it didn't even feel like we were pulling a trailer. About a 50 mile loop there and back on back country roads, never going over 55 and the dash said 16.8 mpg, in tow mode. I did not order the trailer brake function but it downshifts on braking like it has it....maybe it is the tow mode. But it works well and very smooth. This truck is going to make towing a pleasure and the back up camera is aimed perfect for hooking up the trailer. BTW, my rig weighs in at very near 4000 lbs. 20200809_113056.jpg
 
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