PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Tuner Locked my PCM!

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Old Jan 25, 2009 | 06:31 PM
  #21  
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Originally Posted by bigblank69
HP Tuners, and it says security access denied
That sounds locked.
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Old Jan 25, 2009 | 06:43 PM
  #22  
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Originally Posted by LS2tiger
Its because your using HP tuners. The shop I think your talking about uses EFI live.
You would still be able to read it. I use both. You can actually tune with one then the other, as long as there is no COS applied.
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Old Jan 25, 2009 | 06:51 PM
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I can't believe that ANY tuner still locks the PCM especially considering the prices charged. The shops that tune the TB SS seem to get away with that BS without a problem. Go figure.
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Old Jan 25, 2009 | 07:21 PM
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Actually, I'm going to start offering it to my later model Vette owners for their protection. If their PCM is locked, the dealer can't reflash it, and lock it.
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Old Jan 25, 2009 | 07:56 PM
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offering is one thing, doing it without the customers knowledge is another...
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Old Jan 25, 2009 | 08:01 PM
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Originally Posted by bigblank69
offering is one thing, doing it without the customers knowledge is another...
I agree. I wasn't taking up for whoever it was.
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Old Jan 25, 2009 | 08:01 PM
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Originally Posted by bigblank69
offering is one thing, doing it without the customers knowledge is another...
Exactly right.
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Old Jan 26, 2009 | 05:52 AM
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What really cracks me up about the whole "locking PCM's" thing is that 99% of the ones that I've run across that lock their tunes couldn't tune a lawnmower correctly... who the hell wants to copy a tune that won't idle or drive worth a **** anyway...
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Old Jan 26, 2009 | 09:07 AM
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Originally Posted by edcmat-l1
Are you sure it's locked? What's it say when you try and read it?

If it's been tuned and has had a custom OS applied, you cannot tune it with a different software.

In other words, if it was tuned with HPT, and a COS applied, you cannot tune it with EFIlive. Conversely so, if the same was done with EFIlive, you cannot tune it with HPT.

If it is truly locked, you will not even be able to read it.
I am being told I have a Custom OS using EFI Live, they will only reflash to stock or update my tune... great
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Old Jan 26, 2009 | 10:13 AM
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Originally Posted by BLK02WS6
What really cracks me up about the whole "locking PCM's" thing is that 99% of the ones that I've run across that lock their tunes couldn't tune a lawnmower correctly... who the hell wants to copy a tune that won't idle or drive worth a **** anyway...
Sadly, that is why they locked them. So no one will know their trade secrets (to ripping people off). Like Ed, I would only lock a tune if the customer requested it, but I have never done it. I don't even know how to lock a tune.

Good luck dude!
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Old Jan 26, 2009 | 10:20 AM
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Originally Posted by bigblank69
I am being told I have a Custom OS using EFI Live, they will only reflash to stock or update my tune... great
But it doesn't explain it being locked. Let me know how you make out getting another PCM. You have a PM
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Old Jan 26, 2009 | 10:27 AM
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It dont sound like the tune is locked. It is just using an efilive custom os. So ANYONE with efilive can still read it out and modify it.

This is the same situation if someone is using a hptuner custom os.

The Fake locking is only due to the things in the background of the tune. Tables are being used differently and if you would just open it up in another program and not know that the tables are being used differently, there would be potential for engine failure..
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Old Jan 26, 2009 | 10:54 AM
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Thats what it sounds like to me. I've had customers ask me why I locked my tune when in fact it was never locked it had a hptuner or EFIlive custom OS on it.
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Old Jan 26, 2009 | 01:07 PM
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Kenne Bell locked the tune on my supercharger kit on my Yukon XL 8.1. They fully disclosed this upfront and tune included/required when purchasing kit. aTheir reason was they didnt want people playing with tune and then turning around and blaming them when system didnt work well or resulted in damage to the engine.
Made sense to me.
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Old Jan 27, 2009 | 03:16 AM
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Originally Posted by bigblank69
I am being told I have a Custom OS using EFI Live, they will only reflash to stock or update my tune... great
if that is the case then you can over write the tune with HPT.. just get a stock file for your car and year model and do a write entire and start the tune from scratch..

i do this almost every day
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Old Jan 27, 2009 | 12:04 PM
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Originally Posted by dsrour
Kenne Bell locked the tune on my supercharger kit on my Yukon XL 8.1. They fully disclosed this upfront and tune included/required when purchasing kit. aTheir reason was they didnt want people playing with tune and then turning around and blaming them when system didnt work well or resulted in damage to the engine.
Made sense to me.
That's totally acceptable. If they tell you up front, then you can go along with it or go somewhere else.
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Old Jan 27, 2009 | 07:30 PM
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Originally Posted by JonCR96Z
That's totally acceptable. If they tell you up front, then you can go along with it or go somewhere else.
I agree as well. Especially on a FI set up I can totally seeing a reseller saying they will not leave it as a open PCM.

In my case I came in only looking to get my Stalling issue fixed. I left MTI Racing with a locked PCM, my car still stalling, and my wallet $600 lighter.
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Old Jan 29, 2009 | 12:44 AM
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lol...
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Old Jan 29, 2009 | 01:24 AM
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that blows man, time to start learning how to tune
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Old Feb 3, 2009 | 04:50 PM
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Sorry to hijack this thread but didn't want to start a new one when this is relevant to my situation.

I don't know anything about tuning, HpTuners Calibration Details screen it states "Locked" under Tuner Lock Status, but i'm able to log a run and look at tables. Spoke to tuner, they checked my file (not car's pcm) and says its not locked. So not sure if its locked, if I'm understanding this thread then the pcm is NOT locked as tuner advised me.

Last edited by cjh; Feb 3, 2009 at 05:16 PM.
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