Locked Tune
Locked Tune Had a customer come in the shop the other day with a PCM that had been locked by another tuner. I have the ability to unlock PCM's and thought I would share with everyone what I found behind the 'locked door'.
Please don't ask me the name of the other tuner. I won't divluge it to keep the shitstorm to a minimum...
Please don't ask me the name of the other tuner. I won't divluge it to keep the shitstorm to a minimum...
TECH Enthusiast
Joined: Nov 2006
Posts: 620
Likes: 0
From: Katherine N.T Australia
You can Download EFI LIVE in Demo Version and see it.
www.efilive.com
But here it is anyway.
LABELS PE Modifier Based on RPM (AFR)
RPM {link: SAE.RPM} Value
0 11.702858
400 11.702858
800 11.702858
1200 11.702858
1600 11.702858
2000 11.245990
2400 11.245990
2800 11.022560
3200 11.022560
3600 10.807835
4000 10.593818
4400 10.388113
4800 10.183317
5200 10.183317
5600 10.183317
6000 10.593818
6400 10.593818
6800 10.593818
7200 10.593818
www.efilive.com
But here it is anyway.
LABELS PE Modifier Based on RPM (AFR)
RPM {link: SAE.RPM} Value
0 11.702858
400 11.702858
800 11.702858
1200 11.702858
1600 11.702858
2000 11.245990
2400 11.245990
2800 11.022560
3200 11.022560
3600 10.807835
4000 10.593818
4400 10.388113
4800 10.183317
5200 10.183317
5600 10.183317
6000 10.593818
6400 10.593818
6800 10.593818
7200 10.593818
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Verdad Gallardo TECH Enthusiast
Joined: Nov 2006
Posts: 620
Likes: 0
From: Katherine N.T Australia
Looks like a supercharged car with a huge cam that wont idle under 950 rpms..
The computer needs a crank relearn done on it. All that data is empty for some reason in the Bin. No learned info is stored for some reason..
The computer needs a crank relearn done on it. All that data is empty for some reason in the Bin. No learned info is stored for some reason..
that thing is going to die if it ever looses the MAF!!!!
Oh Well, I guess people need to learn. Ah hah, I found how they are getting around the PE, look at B3606. 12.947. It won't go any richer than that, no matter how hard they try.
Oh Well, I guess people need to learn. Ah hah, I found how they are getting around the PE, look at B3606. 12.947. It won't go any richer than that, no matter how hard they try.
I have had the same thing happen where customers specifically wanted their PCM's locked to keep the dealership out of it. In this case however, this customer went to the tuner and the tuner drove his car around for a little while, said he couldn't get it right because of a broken sparkplug and took $450 for his time... He in no way, shape, form, or fashion told the customer that he had locked his PCM. The customer only found out when he brought the car to me to be tuned after replacing the motor. When the customer called the tuner, the tuner told him he wouldn't unlock it unless he came back to him. He further stated that he locked the tune because he didn't want his work being copied. If I hadn't heard the conversation I would probably not posted this here. I am not making any comments on the 'tune' or 'tuner', just showing everyone what is behind the mystery. Anyways the lock isn't going to keep me out anyways...
The only other legitimate reason I can see for a lock (which is the ONLY reason I ever locked any PCM's, unless the customer requested it) is if you have built a motor for someone with a warranty. If the customers goes in and modifies your tune to the point of damaging the motor and then wants warranty coverage...that is a big issue.
Last edited by Geoff; Apr 20, 2009 at 04:46 PM.
yes, that is a good point Frost, sometimes you need to lock a pcm, to protect the customer from themselves.
edit, looks like we posted at the same time.
Ryan
Oh, I just added 4 degrees of timing, and leaned out the airfuel, it pulled great at the track. Your going to warranty this #7 piston failure right? since you tuned it
Ryan
Mark for reference in your notes.
B3606 does not limit the minimum amount of commanded fuel while in Cell22 or Pe mode..
B3606 is used to tell the computer what value to be limited at while the vehicle is in hot mode. Usually set at 270F degrees of coolant temperature or higher. That is the only time that value is used. The value is user defined by B1601.
For proof of concept a stock car will show a commanded of 11s and that is richer than the value in B3606 which is stock in that table of this cal.
As for Maf going bad and potential for failure, Yes that would be possible as the Backup ve table is going to be used and should have been copied over from the main ve table for protection.
That is a jacked up tune for sure. I'm sure the tuner didn't want somebody stealing his ideas. What he didn't realize is that he was doing the world a favor by locking them, LOL. The curtain has been pulled back and the emperor has no clothes! Very embarrassing!
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
