EFILive locked ECM

[Killerbee]

I logged a truck today that has an ECM bought from someone who locks them (reserving commentary). I got some very strange results...some parameters were good, others clearly erroneous, like 7000 us fuel pulse, 3 psi baro, etc.

Does locking an ECM render logging problems?

FWIW, I was very unimpressed, this guy is suppose to be on top of this game, (doesn't post here) and the tune felt like a POS. We should have some kind of a tune writing contest with various categories, judges, etc.

 

[Gmclbz]

Which ecm and whose tuning?

 

[Killerbee]

This isn't about a guy, its about locked ECM's, in this case an LLY.

 

[GMC_2002_Dmax]

If you open any LB7 or LLY tune file the mm3 limit for Main Injection is 5000us.

Locking does not alter the ecm's ability to stream the correct data.

Really strange.

 

[Killerbee]

That's what I was thinking. I'll post the log. Maybe that will help.

 

[Killerbee]

hmmmm,

not a valid extension. Rob, can you add .efi files to the approved list?

 

[Killerbee]

HERE

the nonsensical parameters were red x'd upon connection.

 

[vortecfcar]

7000 us fuel pulse, 3 psi baro, etc.

Shhhh... don't let secrets like that out to the public.:secret:


Why were you scanning the truck? (Maybe it's poor running was not the fault just a crappy tune?)

Nick

 

[Poltergeist]

hmmmm,

not a valid extension. Rob, can you add .efi files to the approved list?

zip the file it will make it quicker for others to download.

 

[Lennart]

Very strange, never seen anything like it. Did you ask Ross for help?
Not sure if EFILive under some circumstances will write wrong data.
If you have a V2, will logging with the V2 or even displaying data on the V2 screen get the same results?

 

[Killerbee]

Shhhh... don't let secrets like that out to the public.:secret:


Why were you scanning the truck? (Maybe it's poor running was not the fault just a crappy tune?)

Nick

This is a very good point. Let me clarify. This particular vehicle runs ok. He has a number of things done to the truck and he has independent boost sensors, he will over shoot to 30-32, and settle to 26-28 psi. These sensors are located at the discharge. The original intention was to determine if he had a leak, by comparing COP with the scanned MAP reading. But this came to a dead end.

The truck runs alot like a stock truck, tuned on the upper end, much like a predator would do. Has a lot of turbo lag also, again like a stock truck.

I was just a little surprised, that for the price he paid, he didn't get some refinement. For example, on a stock LLY, you can go like 20% into the throttle before anything really happens. To me that is lack of attention and refinement.

Thanks Rob, forgot about zipping.


Maybe I am doing something wrong here. Selected D-max imperial PID. He also has DSP2, that shouldn't be an issue. Maybe I'll have him put on the stock PCM and try again. After he drove my truck, he is no longer interested in his, but I wanted to rule out any issues he may have first, that is the main reason for logging it, that plus my sick curiosity. :rofl:

 

[Diesel Pilot]

We should have some kind of a tune writing contest with various categories, judges, etc.

 

[sweetdiesel]

ROTFLMAO:rofl::rofl::rofl:

 

[vortecfcar]

The truck runs alot like a stock truck, tuned on the upper end, much like a predator would do. Has a lot of turbo lag also, again like a stock truck.

I was just a little surprised, that for the price he paid, he didn't get some refinement. For example, on a stock LLY, you can go like 20% into the throttle before anything really happens. To me that is lack of attention and refinement.

Agreed

 

[g man]

Perhaps EFI is not used to tune the ecm? I have run into a situation where we were tuning a transmission for shifting on the track (sled pull). The truck was shifting WAY before the selected shift points. (I was using RPM tables, not MPH) I finally maxed the efi allowable shift point out (6K rpm iirc) and the truck still shifted around 3XXX rpm! I had the guy get a Alli tune from this sucker and shifts were as asked for. Perhaps the method used to tune the ecm had variables that would not allow the TCM to "see" the correct info from the ECM? I dunno. Anyway, long story made longer is I a not impressed with the tuning on this particular truck as well.... Sorry to include such long and useless info....:hello:

 

[Killerbee]

response from EFILive...

...after asking if spoofing was possible.



"Anything is possible, there's nothing to stop someone with some ECM knowledge using our DSP2 programs and further modifying the code to disable functions. I presume the ECM is locked?, if yes then whatever has been done was probably done on purpose.

Cheers,
Ross"



I'll tell you what, if you are going to go to the trouble of rendering a vehicle completely %^&$*(@ undiagnosable, I would think you should first have a little %^&#(*& talent to hide.

Just had another call from someone who tows at 8000 ft who said his truck is worthless at his altitude. And sure enough, bought from the same guy, and shipped it back once already. How do you sell an ECM to someone who lives in Denver, having never left sea level to do any tuning?


"customer for life" or "paperweight jungle"? Do these ECM's even have a residual value? Can they be "cleaned".

 

[g man]

Killer,
I believe the ecm I am referring to was tuned at or near sea level as well........

 

[LBZ]

No Kidding. That is a pissing match that I wouldn't even think about suggesting.:baby:

Sounds to me like buddy should just sell that ecm and buy a stocker and try another style of tuning tool.