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Old 08-29-2016, 10:40 PM
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My GDE HOT TUNE results

So, yes I am new to the Jeep family, although I've been a MOPAR guy for a long time. I traded my 2015 SRT 392 Charger for a 2015 JGC Ltd EcoDiesel about a month ago and I haven't looked back. At $10k off the MSRP, it was too good a deal to pass up. My wife has been driving a 2015 RAM Laramie Ltd since the end of May 2014 and we've loved nearly every minute of it, except the turbo lag. That was, until the GDE tune...

My first and only mod on this JGC was to install the GDE Hot tune. Mercy!!!! This is the only mod I'll ever need. Zero turbo lag and a very quick 0-60 time, plus great fuel economy to boot. Here are couple pics I took today. On a 75 mile trip we set the cruise control at 75 and averaged 35.1 mpg. Additionally, our average over the last 303 miles, approximately 45/55 city/hwy driving, we've averaged 30 mpg. Absolutely amazing, imho.

jgcmpg2.jpg

jgc mpg1.jpg

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Old 08-29-2016, 11:12 PM
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Re: My GDE HOT TUNE results

Welcome to the Happy GDE Owner's Club. Had mine on since 459mi.
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Old 08-29-2016, 11:19 PM
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Re: My GDE HOT TUNE results

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Originally Posted by Bounty Hunter View Post
Welcome to the Happy GDE Owner's Club. Had mine on since 459mi.
Thanks, and a big thumbs up to you! I put mine on at 667 miles, but she had 380 on her when I took delivery. It sure is like night and day compared to stock!
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Old 08-30-2016, 09:52 AM
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Re: My GDE HOT TUNE results

Does the GDE tune effect the emissions systems at all? How about warranty? What does it do exactly as far as the tune goes?
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Old 08-30-2016, 10:16 AM
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Re: My GDE HOT TUNE results

As with any aftermarket tune, it is not legal for emission controlled vehicles. It is for off-road use only....yada, yada, yada.

That being said, I've been tuning my vehicles for more years than I can count. I've never had a problem. To me, the improvements are worth the risk. Funny thing is about life, without risk there is no reward. I like rewards, so I take calculated risks.

This tune is a direct ECM replacement, and the EGR will be totally disabled. However, it is not detectable by the service techs. On that note, I told my service tech and he has labeled my JGC according to my wishes of "no future ECM updates desired by owner."

As far as the tune goes, check this data sheet out.

http://www.greendieselengineering.co...oDiesel.action
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Old 08-30-2016, 08:55 PM
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Re: My GDE HOT TUNE results

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Originally Posted by mbaessler View Post
Does the GDE tune effect the emissions systems at all? How about warranty? What does it do exactly as far as the tune goes?
GDE says the ED will pass emissions tests with their tune installed.

The tune can have an effect on your warranty if the following two conditions are met:
1) The dealership knows about the tune (GDE says it's undetectable at the dealer level)
2) FCA can show the tune caused the failure for which you're seeking the warranty coverage (Magnusson Moss Warranty Act). GDE claims their tune is well within the safe operating parameters of the 3.0L engine and will not cause failures. They will provide programming information to fight any such claim by FCA.

I've had my ED serviced several times with the GDE tune, I simply tell the service writer to not update the PCM and make sure he annotates it on the work order. No issues.

Check out GDE's page for all the benefits of the tune, well worth it.
Green Diesel Engineering
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Old 08-31-2016, 09:57 AM
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Re: My GDE HOT TUNE results

I just read the GDE literature referenced and I hardly call their tune hot. It seems very practical and prudent and doesn't look like it would over tax the engine. I was told early on that this engine was already pretty maxed out on another forum. I am now seriously looking to have this done. From what I recall reading you must pull your ECU and send it to them and wait for the return then reinstall...


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Old 08-31-2016, 11:16 AM
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Re: My GDE HOT TUNE results

You can do it either way. I chose to purchase the tuned ECM and pay the core charge of $650.00. This is the ECM exchange option. When my GDE tune arrived, I swapped the ECM's and used the same shipping box to return my original ECM. They immediately refunded the $650 and I've been a very happy driver.

The whole experience took 8 days from purchase to refund of the $650.00. Three days to receive my tuned ECM, I installed it in about 20 minutes, and shipped it back USPS Priority that afternoon. My return reached their shop on Saturday, and they processed my refund late on Monday.

Overall and excellent experience.

I will mention, some guys choose to keep their original ECM and forgo the refund.
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Old 08-31-2016, 09:48 PM
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Re: My GDE HOT TUNE results

I too added the hot tune to my '14 @ 65000 miles on the odometer. I gained back some of the mileage that I lost when I added the KO2s, as well as a near instant throttle response. And while I did see a gain in fuel economy back to near what I had when new, I've yet to crack the 30mpg barrier. Granted however, one must consider that: I now drive it more aggressively as it is FUN to drive & I am running 50mm of OME suspension lift and now DuraTrac tires. (switching to non-LT rated DuraTrac's saw a gain of 1.9mpg alone, and it would be safe to assume that is because the tires are 11 pounds lighter EACH). The greatest improvement I've seen was while pulling 4053 pounds of trailer - still maintaining 21mpg on interstate whereas before the tune I would get 15.6 - and having the mini-exhaust brake to aid in deceleration as a bonus.

I purchased a used ECM out of a wrecked '15 limited and sent it to GDE to install, and kept a stock ECM on hand for dealership visits. Swapping ECMS now takes a whole 8 mins. By simply removing the two threaded bolts that hold the overflow tank in place one can gain easy access to the bottom ECM bolt. Longer to R&R the overflow tank than to swap a ECM.
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Old 09-01-2016, 12:48 AM
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Re: My GDE HOT TUNE results

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Originally Posted by Nordic1 View Post
I too added the hot tune to my '14 @ 65000 miles on the odometer. I gained back some of the mileage that I lost when I added the KO2s, as well as a near instant throttle response. And while I did see a gain in fuel economy back to near what I had when new, I've yet to crack the 30mpg barrier. Granted however, one must consider that: I now drive it more aggressively as it is FUN to drive & I am running 50mm of OME suspension lift and now DuraTrac tires. (switching to non-LT rated DuraTrac's saw a gain of 1.9mpg alone, and it would be safe to assume that is because the tires are 11 pounds lighter EACH). The greatest improvement I've seen was while pulling 4053 pounds of trailer - still maintaining 21mpg on interstate whereas before the tune I would get 15.6 - and having the mini-exhaust brake to aid in deceleration as a bonus.

I purchased a used ECM out of a wrecked '15 limited and sent it to GDE to install, and kept a stock ECM on hand for dealership visits. Swapping ECMS now takes a whole 8 mins. By simply removing the two threaded bolts that hold the overflow tank in place one can gain easy access to the bottom ECM bolt. Longer to R&R the overflow tank than to swap a ECM.
Simply put, if nothing else, the JGC 3.0 ED is a whole lot more fun to drive with the GDE tune than when it is stock! Right?

Anyway, come to think of it, I am running 255/55/20's now, so my mpgs are actually 2% better than I posted.

For those sitting on the fence, take the leap and buy the tune! It is a freaking blast and your engine will thank you for it in the long run.
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Old 12-20-2016, 08:14 PM
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Re: My GDE HOT TUNE results

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Originally Posted by MrMac View Post
Simply put, if nothing else, the JGC 3.0 ED is a whole lot more fun to drive with the GDE tune than when it is stock! Right?

Anyway, come to think of it, I am running 255/55/20's now, so my mpgs are actually 2% better than I posted.

For those sitting on the fence, take the leap and buy the tune! It is a freaking blast and your engine will thank you for it in the long run.
Why, MrMac, you should work for GDE, you are so good at pushing their product.

I was definitely thinking of buying the tune, then I sent them an email asking some questions. The replies made me question how much their "contributors" know about engines, mechanics, or material properties and how much of the tune is just them changing constants and parameters until they find a result they like. They made claims that were absurd seemingly just to wave away my questions. I would love to shut off some of the emission controls but now I just can't do that with their tune unless I review all of the changes they made myself.

Of course, now it will seem like I work for a competitor, who else would have anything but great things to say about GDE heh.
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Old 12-20-2016, 09:12 PM
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Re: My GDE HOT TUNE results

Lmao you're going to fit right in at ppei.
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