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How to tell if your ECU has been tuned.

Brady

Well-Known Member
Jun 7, 2015
1,050
422
Truck Year
2015
GDE and HD Diesel lower the cruise control down to 15mph. OE is 25mph. Not sure about other tunes.
 

carlhenry

Well-Known Member
Nov 21, 2018
1,506
283
Truck Year
Not Listed
if its a late model open the door put in gear if it drives its tuned
 

carlhenry

Well-Known Member
Nov 21, 2018
1,506
283
Truck Year
Not Listed
i had a 2918 when new started truck opened door truck would not move tuned it then it would move bought a wrangler open door wont move fmc is half junk i dont know if the older ecos had that feature
 

Micahbarnard

Member
Dec 25, 2020
37
3
Truck Year
2015
i had a 2918 when new started truck opened door truck would not move tuned it then it would move bought a wrangler open door wont move fmc is half junk i dont know if the older ecos had that feature
I’m not familiar with “fmc”? Is this an exhaust filtering device or something?
 

carlhenry

Well-Known Member
Nov 21, 2018
1,506
283
Truck Year
Not Listed
they make the ram and all other mopar fmc is fiat motor company they also make jeep
 

John Jensen

Well-Known Member
Mar 22, 2016
840
416
Truck Year
2016

Tremper126

Moderator
Staff member
Feb 15, 2019
908
331
Truck Year
2014
I couldn’t remember, if I had my truck I would have given it a shot to confirm but she’s been at body shop for 4 months now.
 

John Jensen

Well-Known Member
Mar 22, 2016
840
416
Truck Year
2016
I couldn’t remember, if I had my truck I would have given it a shot to confirm but she’s been at body shop for 4 months now.
Bummer!
 

JDE

New Member
Jan 5, 2021
4
0
Truck Year
2019
I just joined recently so I have some questions.
First off I have a new 2019 Ram eco diesel that does not even have one oil change yet and this is my first diesel so all of this is new to me.
So I am not sure what a ECU is or even how to tune it, or what benefit it is to tune it.
But I did but it in gear and it did not move.
Please send information as Knowledge is Power

Thanks
 

Micahbarnard

Member
Dec 25, 2020
37
3
Truck Year
2015
The ECU is the computer that runs your engine. An ECU tune is when a company rewrites the software that run the engine and optimizes it. Making it work better. On the Eco Diesel engine, tunes can make a big difference in the mileage, engine life, and power.
 
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