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-   -   How to 99-02 PCM into 97-97 vette with pics! (https://ls1tech.com/forums/corvette-performance/744223-how-99-02-pcm-into-97-97-vette-pics.html)

Eurospec2 07-06-2007 12:25 PM

How to 99-02 PCM into 97-98 vette with pics!
 
Hello!


First thing you will need to disconnect the battery and jack up the front of the car. Remove the passenger front wheel and the splashguards behind the wheel and Viola your staring at your PCM! The first pick here is what youll see, i have already removed the PCM and the brackets and pulled back the shielding from the wire looms.

http://i182.photobucket.com/albums/x...1/DSC00910.jpg



This is where the fun begins, and it REALLY helps to have a partner with a label maker for this step. Plan for this to take the better part of an afternoon, this is not something you want to rush. Basically, you take apart the PCM connectors and 1 by 1 remove each pin, Labeling as you go. What i did was i looked up the pin on the 97 PCM Pinout schematic i had, read what the signal was, found that signal on the 2000 PCM Schematic and labeled the wire to where it would need to go back into the connector for the new PCM. YOU DO NOT HAVE TO CUT ANY WIRES, all you are doing is removing the wire from connector, using your pinout diagrams to figure out where it would be in the connector for the new PCM and after they are all labeld reinserting them into the connectors in new locations. Here is a pic of what youll be looking at after labeling

http://i182.photobucket.com/albums/x...1/DSC00913.jpg


Now, once they are all removed and labeled with there new locations, all you do is start reinserting them into the connectors in there new homes!


http://i182.photobucket.com/albums/x...1/DSC00915.jpg


Once you have them all re-installed you can go ahead a wrap them back up to make them nice and neat and weatherproof
http://i182.photobucket.com/albums/x...1/DSC00922.jpg

http://i182.photobucket.com/albums/x...1/DSC00920.jpg



after your done wrapping, you can put the connector backshells back together and install your new PCM brackets into the car

http://i182.photobucket.com/albums/x...1/DSC00923.jpg


then, install the new PCM and connect everything back up and VIOLA you are done!


http://i182.photobucket.com/albums/x...1/DSC00928.jpg



Easy right? well yes it isnt that difficult, i cant stress enough taking your time if you try this yourself when you are removing and labeling the wires, that is the most critical step.

lastly, there is some programming involved in this. Obviously the new PCM will need to be flashed with your Vin, and you will pop fuel tank pressure sensor codes when you activate the newer Corvette operating system in the PCM, this is due to the 97-98 Corvettes do not have the tank pressure sensors installed, so simply program out those codes and you are good to go.

So, now you have a 99-02 PCM in your 97-98 Corvette! Youve opened a whole new world of tuning oppurtunitys for your car, expanded VE tables, Custom operating systems from EFI LIve and you can real time tune with tools like a Moates Roadrunner!

Beaflag VonRathburg 07-09-2007 08:49 PM

After reading that there's no way in hell I'd be able to do this being partially color blind.

staringback05 07-10-2007 02:37 AM

i wouldnt be able to do it due to the patient factor

2MuchRiceMakesMeSick 07-10-2007 04:31 AM

holy dog mess thats one big spaghetti lunch you got there

tunedportcj5 07-10-2007 07:14 AM

Hopefully your car won't contract an ETD (electronically transmitted disease). That Moates Roadrunner has been used more than hooker on a troop train! :devil:

JoeyGC5 07-10-2007 09:35 AM

That makes some of those 97's look oreinteresting now :chug:

ls1290 07-10-2007 10:17 AM

You do not want to flash a 97/98 into a 99+ PCM. The table structures and layout are completely different. LS1Edit or HPTuners will freak out when it reads the 97/98 vin from the PCM and trys to a 97/98 table structures into a 99+ PCM. That is a good way to wreck a PCM.

Keith

Eurospec2 07-10-2007 12:11 PM


Originally Posted by ls1290
You do not want to flash a 97/98 into a 99+ PCM. The table structures and layout are completely different. LS1Edit or HPTuners will freak out when it reads the 97/98 vin from the PCM and trys to a 97/98 table structures into a 99+ PCM. That is a good way to wreck a PCM.

Keith

your absolutely correct, and thats why i did not use HP Tuner or LS1 Edit. BUT with EFI Live you can flash a 97-98 VIN Into any 99-02 operating system and it works just fine.

ls1290 07-10-2007 12:20 PM


Originally Posted by Eurospec2
Your following me around on different forums posting this garbage, what is your reason for trying to prove me wrong, you stated in the past that you tried to do this and could not make it work, well we have and it works great, please drop your chip and accept that with proper knowledge and the proper tools (EFI LIVE) that this can be done.

I am not following you around :eyes: You left out these important facts in your post. If someone tried to do this with LS1Edit or HPTuners, they would wreck their PCM.

Keith

tunedportcj5 07-10-2007 12:22 PM

Hmm - my '98 VIN doesn't have any problems with my '99 ECM running OS5 with a 2002 calibration file. :judge:

bluecajun5.3 07-10-2007 06:01 PM

:corn:

Doc 07-10-2007 10:56 PM

:corn: :swing: :violin: :jest: :drive:

tnsyty 07-14-2007 07:29 AM

Pretty good info. How much tuning differences are there with HPtuners in my 98 vs 99+ PCM? I am glad that this swap is possible do to fewer used 97,98 pcms to replace mine if it ever goes dead.

Doc 07-14-2007 11:20 AM


Originally Posted by tnsyty
Pretty good info. How much tuning differences are there with HPtuners in my 98 vs 99+ PCM? I am glad that this swap is possible do to fewer used 97,98 pcms to replace mine if it ever goes dead.

well heres the deal with that, there is a HUGE improvement in tuning options with the 99-02 PCM compared with the 97-98, but unfortunetaly this swap cannot be done with HPTuners, it can be easily accomplished with EFI Live, so you would have to switch tuning suites

thosewhohatedmecreat 08-22-2007 05:07 PM

Now make a guide for a camaro! I heard there are a few things ya gotta change...

Eurospec2 08-22-2007 10:39 PM


Originally Posted by thosewhohatedmecreat
Now make a guide for a camaro! I heard there are a few things ya gotta change...

Nope, its exactly the same swap physically just the PCM is in a different location, nothign else has to be changed. Theres is a couple differences in the tune for a camaro, but no other parts need to be changed.

if you want details PM me ill explain what the tune differences are.

thosewhohatedmecreat 08-23-2007 02:23 PM

I heard something about the fuel gauge though... total bs?

TLKSCHP 08-23-2007 09:46 PM

Since I use EFI LIve does this mean with the 98 Vin flashed I don't have to buy a 99 or vin newer license. still falls under the free 97-98 tuning.

Eurospec2 08-27-2007 01:00 PM


Originally Posted by TLKSCHP
Since I use EFI LIve does this mean with the 98 Vin flashed I don't have to buy a 99 or vin newer license. still falls under the free 97-98 tuning.

No, the license is attached to the serial number of the PCM, so you will have to pay for the 99-02 license.

Eurospec2 08-27-2007 01:01 PM


Originally Posted by thosewhohatedmecreat
I heard something about the fuel gauge though... total bs?

For the vette the fuel guage is not a problem

For the F-Body it is slightly different, but it is all fixed in the tune by swapping a different fuel segment into the PCM to make your fuel guage work.


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