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Old 08-05-2019, 08:25 PM   #1
xnamerxx
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Someone Cracked the Factory ECU

Well it looks like someone finally figured out how to crack the factory ECU. I'm still doing some testing, but initial tests look pretty promising.

https://www.youtube.com/watch?v=MH9nHxnjCVc
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Old 08-06-2019, 08:27 AM   #2
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They bypassed the electrical rev limiter?
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Old 08-06-2019, 09:14 AM   #3
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Is this your youtube channel? I want more details!
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Old 08-06-2019, 10:39 AM   #4
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My channel my car.

They upped the rev limiter from 6600 to 7400, increased timing to run on 93, removed the top speed limiter, and increased the valve timing a bit more.

So far the car is still sitting on a trailer so I haven't done any testing aside from idle and rev it, but that'll happen this weekend if all goes to plan.
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Old 08-06-2019, 12:00 PM   #5
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YES. Need more details!!! With this crack, can injectors be controlled?
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Old 08-06-2019, 12:08 PM   #6
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Yes from what I was told injectors can be controlled I believe he leaned it out a touch for me as well but I won't know until I get it off the trailer and look at the logs.

I'm not sure how much remote tuning can be done since the guy who did the crack had to have my ecu in order to make changes.
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Old 08-06-2019, 12:55 PM   #7
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How about Dbw adjustments?


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Old 08-06-2019, 12:57 PM   #8
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I'm not sure on that one
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Old 08-06-2019, 02:12 PM   #9
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Shit just got a bit more interesting around these parts, eh?
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Old 08-06-2019, 02:12 PM   #10
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Subscribed :D
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Old 08-06-2019, 02:24 PM   #11
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I'm not sure on that one
If they can do DBW adjustment to get rid of rev hang, I'd buy another ecu just to send to them to crack and adjust.
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Old 08-06-2019, 02:38 PM   #12
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The throttle hang is a complicated problem, alot of it caused by the really heavy and big factory flywheel. Even with the lightweight steel one on this engine it happens a bit.

The only thing I'm seeing in my logs is the throttle % going from 16 to 17 right as it nears 1k rpms which it does to keep the engine from stalling.

But once everything can be validated and I get the go ahead from this tuner, I'll give out their info.
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Old 08-06-2019, 03:40 PM   #13
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Yes definitely interested. I'd love to buy another XD ecu and have them raise the rev limiter push timing for 93 octane and get rid of the governor.

This would really help tie me over until I go standalone
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Old 08-06-2019, 07:55 PM   #14
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Quote:
Originally Posted by xnamerxx View Post
Well it looks like someone finally figured out how to crack the factory ECU. I'm still doing some testing, but initial tests look pretty promising.

https://www.youtube.com/watch?v=MH9nHxnjCVc
Game changer for sure.
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Old 08-06-2019, 10:39 PM   #15
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If I could get rid of my AEM F/IC and run a tuned stock ECU, I'd be grinnin' from ear to ear.
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Old 08-07-2019, 08:00 AM   #16
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Quote:
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How about Dbw adjustments?
Time to be a Debbie Downer. I'm all in favor of pushing performance limits but I want to urge caution in this specific area.

Having recently spent some time looking at the "unintended acceleration" issue investigations from a few years back, I would be very hesitant to do anything related to throttle control. The system is specifically designed to be resistant to unexpected feedback but as we all know, there are circumstances that will cause very bad things to happen. There's a reason they don't want you in the code, this being one of the bigger ones. It's considered a 10/10 safety critical feature by the FMVSS, meaning that a failure of the system can result in death or serious injury.

I'm still planning on using a standalone (MegaSquirt) ECU for any crazy 1NZ builds and going with cable throttle. That means you can do whatever you want with rev limits, injectors, cam timing, etc. and not have to worry about a critical safety feature going awry and remove the laggy throttle response to boot.

That said, this is still a major achievement and I don't want to besmirch xnamerxx's success.
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Old 08-07-2019, 08:16 AM   #17
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Quote:
Originally Posted by CrankyOldMan View Post
Time to be a Debbie Downer. I'm all in favor of pushing performance limits but I want to urge caution in this specific area.

Having recently spent some time looking at the "unintended acceleration" issue investigations from a few years back, I would be very hesitant to do anything related to throttle control. The system is specifically designed to be resistant to unexpected feedback but as we all know, there are circumstances that will cause very bad things to happen. There's a reason they don't want you in the code, this being one of the bigger ones. It's considered a 10/10 safety critical feature by the FMVSS, meaning that a failure of the system can result in death or serious injury.

I'm still planning on using a standalone (MegaSquirt) ECU for any crazy 1NZ builds and going with cable throttle. That means you can do whatever you want with rev limits, injectors, cam timing, etc. and not have to worry about a critical safety feature going awry and remove the laggy throttle response to boot.

That said, this is still a major achievement and I don't want to besmirch xnamerxx's success.
It's very common to use standalone like haltech to control DBW, so I don't understand the problem.
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Old 08-07-2019, 09:30 AM   #18
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Quote:
Originally Posted by CrankyOldMan View Post
Time to be a Debbie Downer. I'm all in favor of pushing performance limits but I want to urge caution in this specific area.

Having recently spent some time looking at the "unintended acceleration" issue investigations from a few years back, I would be very hesitant to do anything related to throttle control. The system is specifically designed to be resistant to unexpected feedback but as we all know, there are circumstances that will cause very bad things to happen. There's a reason they don't want you in the code, this being one of the bigger ones. It's considered a 10/10 safety critical feature by the FMVSS, meaning that a failure of the system can result in death or serious injury.

I'm still planning on using a standalone (MegaSquirt) ECU for any crazy 1NZ builds and going with cable throttle. That means you can do whatever you want with rev limits, injectors, cam timing, etc. and not have to worry about a critical safety feature going awry and remove the laggy throttle response to boot.

That said, this is still a major achievement and I don't want to besmirch xnamerxx's success.
Hmm interesting, I don't think I would play around w/ the throttle too much. In the end there is no substitute for a standalone for what I want to do with my 2zr. But if the price is right this would help free up a bit more power and utilize 93 octane pump gas while I save up the funds for a standalone and tune
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