ECM Up-date
Safety Car
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From: Apache Junction AZ
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Burning Brakes
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LS2 and LS7 use the same ecm, the LS3 and ZR1 use the same ecm but is different than the first one.
GM makes an ecm and just fills it with parameters for a specific vehicle.
The LS3 ecm is a bigger and faster ecm, technology moves forward not backward.
The 505 HP in the LS7 is unchanged, only recently there were slight modifications to the tune and now from '07 to '11 there are 76 changes.
Most of these changes are due to the fact that, well you know, the ecm is bigger, stronger, faster.
I'm already going to do this modification on an '07 LS2 and update it to the '08 ecm and LS3 intake components.
Wouldn't that suck if it couldn't be done.
I know it's a little outside the box
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All C6's besides the ZR1 which uses the E67, and the 05's which uses the E40, are using the E38 ECM which is a great ECM. There is no need to update IMO.
GM prefers to use the E67 in factory boosted vehicles like the ZR1 and the CTSV, along with some of the bigger SUV's. Anything can be done, but I do not see the upside to doing so, and more importantly, you already have the "newer" ECM in your 07.
GM prefers to use the E67 in factory boosted vehicles like the ZR1 and the CTSV, along with some of the bigger SUV's. Anything can be done, but I do not see the upside to doing so, and more importantly, you already have the "newer" ECM in your 07.
Safety Car
Joined: Aug 2006
Posts: 4,347
Likes: 25
From: Apache Junction AZ
Have you already tried this?
LS2 and LS7 use the same ecm, the LS3 and ZR1 use the same ecm but is different than the first one.
GM makes an ecm and just fills it with parameters for a specific vehicle.
The LS3 ecm is a bigger and faster ecm, technology moves forward not backward.
The 505 HP in the LS7 is unchanged, only recently there were slight modifications to the tune and now from '07 to '11 there are 76 changes.
Most of these changes are due to the fact that, well you know, the ecm is bigger, stronger, faster.
I'm already going to do this modification on an '07 LS2 and update it to the '08 ecm and LS3 intake components.
Wouldn't that suck if it couldn't be done.
I know it's a little outside the box
LS2 and LS7 use the same ecm, the LS3 and ZR1 use the same ecm but is different than the first one.
GM makes an ecm and just fills it with parameters for a specific vehicle.
The LS3 ecm is a bigger and faster ecm, technology moves forward not backward.
The 505 HP in the LS7 is unchanged, only recently there were slight modifications to the tune and now from '07 to '11 there are 76 changes.
Most of these changes are due to the fact that, well you know, the ecm is bigger, stronger, faster.
I'm already going to do this modification on an '07 LS2 and update it to the '08 ecm and LS3 intake components.
Wouldn't that suck if it couldn't be done.
I know it's a little outside the box
http://www.hptuners.com/forum/showthread.php?t=28327
BJK
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Burning Brakes
Joined: Jan 2005
Posts: 928
Likes: 18
All C6's besides the ZR1 which uses the E67, and the 05's which uses the E40, are using the E38 ECM which is a great ECM. There is no need to update IMO.
GM prefers to use the E67 in factory boosted vehicles like the ZR1 and the CTSV, along with some of the bigger SUV's. Anything can be done, but I do not see the upside to doing so, and more importantly, you already have the "newer" ECM in your 07.
GM prefers to use the E67 in factory boosted vehicles like the ZR1 and the CTSV, along with some of the bigger SUV's. Anything can be done, but I do not see the upside to doing so, and more importantly, you already have the "newer" ECM in your 07.
I have an ECM I purchased for my car last November. It's not the same part # as the one bought last week for the LS3. I'm not loading old stuff in the new ECM and I'm not loading new stuff in the old ECM.
I read the HP tuners post and that what they're warning against.
I'm taking the new ECM and loading LS3 programing and I'm going to stick it in an '07 with a LS3 upgrade.
BTW I'm hoping for the tranny updates, blip on downshift, as a added bonus.
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If this were the case then why is the MAF tables split high and low on the '07 and condensed to one on the LS3 and 2010 LS7, which both take the same part #.
I have an ECM I purchased for my car last November. It's not the same part # as the one bought last week for the LS3. I'm not loading old stuff in the new ECM and I'm not loading new stuff in the old ECM.
I read the HP tuners post and that what they're warning against.
I'm taking the new ECM and loading LS3 programing and I'm going to stick it in an '07 with a LS3 upgrade.
BTW I'm hoping for the tranny updates, blip on downshift, as a added bonus.
I have an ECM I purchased for my car last November. It's not the same part # as the one bought last week for the LS3. I'm not loading old stuff in the new ECM and I'm not loading new stuff in the old ECM.
I read the HP tuners post and that what they're warning against.
I'm taking the new ECM and loading LS3 programing and I'm going to stick it in an '07 with a LS3 upgrade.
BTW I'm hoping for the tranny updates, blip on downshift, as a added bonus.
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Just did a quick check now that my interest is up on this. 06-07 uses ECU
12597121 which is being superceded to 19210738 a 08 LS7/LS3 uses 12612384 which so does a 09 LS7 but it says on the 09 that is uses version with 8.9x software. Do not know what that means right now but I will find out. My only concern with using the new OS eventhough the ECU is the same is that the pinout could be different. What I mean by this is the hardware pinout is the same, but that pin operates something different in the software. This could potentially be fatal to the car is that is the case. You need to go through the schematic on both year cars and compare them to make sure that everything wiring wise is the same.If it is, I do not see why it would not work. You will have to find a VIN to do the initial download with the Tech2 and then change the VIN in either EFILive or HPtuners.
12597121 which is being superceded to 19210738 a 08 LS7/LS3 uses 12612384 which so does a 09 LS7 but it says on the 09 that is uses version with 8.9x software. Do not know what that means right now but I will find out. My only concern with using the new OS eventhough the ECU is the same is that the pinout could be different. What I mean by this is the hardware pinout is the same, but that pin operates something different in the software. This could potentially be fatal to the car is that is the case. You need to go through the schematic on both year cars and compare them to make sure that everything wiring wise is the same.If it is, I do not see why it would not work. You will have to find a VIN to do the initial download with the Tech2 and then change the VIN in either EFILive or HPtuners.
Thread Starter
Burning Brakes
Joined: Jan 2005
Posts: 928
Likes: 18
Just did a quick check now that my interest is up on this. 06-07 uses ECU
12597121 which is being superceded to 19210738 a 08 LS7/LS3 uses 12612384 which so does a 09 LS7 but it says on the 09 that is uses version with 8.9x software. Do not know what that means right now but I will find out. My only concern with using the new OS eventhough the ECU is the same is that the pinout could be different. What I mean by this is the hardware pinout is the same, but that pin operates something different in the software. This could potentially be fatal to the car is that is the case. You need to go through the schematic on both year cars and compare them to make sure that everything wiring wise is the same.If it is, I do not see why it would not work. You will have to find a VIN to do the initial download with the Tech2 and then change the VIN in either EFILive or HPtuners.
12597121 which is being superceded to 19210738 a 08 LS7/LS3 uses 12612384 which so does a 09 LS7 but it says on the 09 that is uses version with 8.9x software. Do not know what that means right now but I will find out. My only concern with using the new OS eventhough the ECU is the same is that the pinout could be different. What I mean by this is the hardware pinout is the same, but that pin operates something different in the software. This could potentially be fatal to the car is that is the case. You need to go through the schematic on both year cars and compare them to make sure that everything wiring wise is the same.If it is, I do not see why it would not work. You will have to find a VIN to do the initial download with the Tech2 and then change the VIN in either EFILive or HPtuners.
I got more info too.
It's the same ECM with different software. It's the software that makes it better, not the ECM itself. In my case I want to load newer stuff in an older model.
If you start with a blank ECM and a VIN from your local used car lot, load the software with the Tech II and change the VIN back to the car that's going to receive it.
And who said it couldn't be done.
:roc k:
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I got more info too.
It's the same ECM with different software. It's the software that makes it better, not the ECM itself. In my case I want to load newer stuff in an older model.
If you start with a blank ECM and a VIN from your local used car lot, load the software with the Tech II and change the VIN back to the car that's going to receive it.
And who said it couldn't be done.
:roc k:
It's the same ECM with different software. It's the software that makes it better, not the ECM itself. In my case I want to load newer stuff in an older model.
If you start with a blank ECM and a VIN from your local used car lot, load the software with the Tech II and change the VIN back to the car that's going to receive it.
And who said it couldn't be done.:roc k:
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Burning Brakes
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That is what I am hoping. I will try and load a old E38 with the brand new software off board and see what happens to it. The only thing is when you buy a new ECM it is blank so I do not understand the part number being different along with the description. I don't have time right now, but I will upload and old ECM and then go through the pinouts and see if anything is different. It would be a two step process and it would have to be done out of the car. First the ECM would have to be changed and then the VIN would have to be corrected to the vehicle or you would have a TDS issue. Will try it and see what happens.
I've locked up my computer trying to load parameters from different vehicles that aren't supported. I close out the program and say goodby to problem, you won't have that option with the ECM. This is when they say you burned it out.
Just giving you the heads up.
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From what I understand, if you try to load newer software on an used ECM it will freeze up, lock you out or simply become inoperable.
I've locked up my computer trying to load parameters from different vehicles that aren't supported. I close out the program and say goodby to problem, you won't have that option with the ECM. This is when they say you burned it out.
Just giving you the heads up.
I've locked up my computer trying to load parameters from different vehicles that aren't supported. I close out the program and say goodby to problem, you won't have that option with the ECM. This is when they say you burned it out.
Just giving you the heads up.
Justin
Thread Starter
Burning Brakes
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Was that trying it with HP or EFILive. What I planed on doing was to program the ECM just as when it was new with the Tech2. Then just going in a changing the VIN. If it does not work like that, then it will not work and there is something different between those E38's. I have a PCM here from and 07 that has an issue with a 5v ref sometime getting too much voltage so I am going to try the PCM first, that way if it kills it, no worries.
Justin
Justin
The Tech II seems to be a more viable option.
Let me know how it goes.
My project car won't be ready for about a month.
Steve
