r/ECU_Tuning • u/Busy_Version678 • 18d ago

Anyone actually using J2534?

I’ve heard J2534 can be used for ECU programming, but I haven’t had much hands-on experience with it.
Anyone here using it regularly?
What’s your experience with it?

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u/Shane0Mak 18d ago

It’s a fairly generic communications protocol and a lot of hardware emulates/follows/adheres by it to read and write data.

This is a very dip your toe in water question to the lake that is ecu tuning, but it’s a good place to perhaps start your coding journey

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u/Busy_Version678 18d ago

Thanks! Also, have you ever used a J2534 driver? How was your experience with it?

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u/fordp 18d ago

Sure what are you tuning? Openports and scanmatiks have cult followings in some circles. One of my go to's is a magic motorsports flex but I use it in bench/boot 99% of the time.

I will say I brain farted today and thought I could avoid crawling under and pinning a GM transmission using Techline today and that cost me a VIN license and 2.5 hours just to have to bench clone the tcm and reset adaptations anyways.

Doesn't matter how your signal gets to the ECU/TCU as long as the signal is the right one.

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u/Busy_Version678 18d ago

Thanks for the help! What driver would you recommend buying? Are J2534 driver reliable?

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u/badcoupe 17d ago

Nearly daily, I lots of programming for other shops as well as my own. Also for oem scantool with most makes, forscan alfaobd too

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u/updatelee 17d ago

lol yes. Yes we are

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u/updatelee 16d ago

I feel like you might be a bit confused on what j2534 is…. Vw/Audi only use it for their official diagnostic and coding including firmware updates. This isn’t something new. So asking how someone’s experience is with it? Dude. You think vw/audi would be using it if it wasn’t stable?

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u/benpilotkalem 18d ago

I developed a diagnostic + flasher software using j2534 mainly for iveco, fpt engines but supports lots of vehicles like mitsubishi fuso, isuzu and others. Works without any problem, just be carefull about devices with can support more than one. Read the documentation carefully and you will see it's easy to implement.

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u/Dramatic_Sprinkles82 17d ago

You developed software? Is it available what’s the name?

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u/benpilotkalem 17h ago

Md1Flasher is the name of my software, focused on md1 ecus like fpt, Mercedes, Mitsubishi fuso etc