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Need help with a pcm swap 98 to 99+

 
Old 05-20-2010, 10:51 PM
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Question Need help with a pcm swap 98 to 99+

My pcm is taking a dump after few electrical problems i have been having. So this would be a great time to up grade to a newer style pcm. Now i have search on here for little bit but i am on fence to do the swap. If i repin the harness witch i would do. Well i lose my fuel gauge? I want to keep my 98 sending unit. If i repin the pcm, well the bcm lose tcs and vats? Then if i have to repin the harness going to the gauges, is there any other way keep my 98 cluster? I know theres alot of people out there have done this swap, so let me know what you did and what not to do.
Thanks Rob
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Old 05-21-2010, 03:42 PM
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Anybody?
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Old 05-23-2010, 10:06 PM
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Also well 99+ pcm will be able work with a 98 bcm???
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Old 05-24-2010, 01:25 AM
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Old 05-24-2010, 10:58 AM
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https://ls1tech.com/forums/conversio...-pin-outs.html

check that out. the fuel guage has to be edited in the tune. my opinion tuen the vats off anyway. bcm good question....all the swaps i have done were for street rods so they didnt use a bcm to begin with. do you care that much for the traction control?
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Old 05-24-2010, 11:01 AM
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i have a list of the pins in the main plug for the ecm but its to large to post so if you like to pm me you email and ill send it to you later.
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Old 05-24-2010, 06:44 PM
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I know would be alright with out but just want to know if there a way to keep it. I like to look at all the options and have all the bases covered.
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Old 05-25-2010, 07:54 PM
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It looks like i am going to do the swap. Theres another conversion under the belt.
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Old 05-26-2010, 09:31 PM
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I just did this swap today using this link http://www.chipsbyal.com/convert98/

I was wondering what this means "31. Red C1-36 DK BLU TO Red C2-38……………TEST FIRST! 99-02 PCM’S" what does it mean test first.

And what is the PNP switch signal because i didn't have a wire in that which is red 32.
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Old 05-29-2010, 09:50 PM
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pnp is park neutral position switch.
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Old 05-29-2010, 11:23 PM
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Thanks, was wondering what pnp was.lol
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Old 09-03-2010, 03:39 AM
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Originally Posted by Sh0wGoAt View Post
the fuel guage has to be edited in the tune.
do you know how to do it? in HPTuners, if that does matter
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Old 09-03-2010, 05:22 AM
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Originally Posted by Vetal View Post
do you know how to do it? in HPTuners, if that does matter

If you're using HPT, you need to send your file to tech support to get the segemnt swap done, The Jet, TC and EFI Live guys can do it themselves
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Old 09-03-2010, 07:18 AM
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Frost did it for me. It works perfect.
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Old 09-03-2010, 10:14 AM
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Originally Posted by spaz1 View Post
Frost did it for me. It works perfect.
Did he do it for free?
HPT tech support does it as a FREE service to their customers
Its easy to do and only takes a couple of minutes, when you have the files and software
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Old 09-03-2010, 11:12 AM
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Originally Posted by poconojoe View Post
Did he do it for free?
HPT tech support does it as a FREE service to their customers
Its easy to do and only takes a couple of minutes, when you have the files and software
They aren't gonna make a 3bar SD tune and remotely tune his car through email for free are they; because that's the work I did for him.

You need to ease up on stuff that you know NOTHING ABOUT.

I would have sent you a PM but it looks like the admins have decided that you are too shady to get them.

Last edited by Frost; 09-03-2010 at 12:31 PM. Reason: removed a bad word :)
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Old 09-03-2010, 12:05 PM
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Frost did it as a pkg. He does some good work I would deffinately recommend him.
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Old 09-03-2010, 02:48 PM
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If you have HP tuners I have a HPT file that will work for you. It will take you 4 credits to use. It has the correct fuel segment already in it. Le me know and i can email oir post it up for you.
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Old 09-03-2010, 05:11 PM
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Other than repining the harness, is there anything else to repin?What about the gauge cluster? I would like to do this swap myself, but I am a little on the fence about it too. My tuner says he can take care of the fuel issue with the gauge not working. And is the link posted above a pretty reliable link as far as the swap being done correctly when followed correctly?
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Old 09-03-2010, 10:10 PM
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If the car is a 1998 and you are moving to a 2002 pcm (0411 works the best) all you have to do is repin the red and blue connectors at the pcm (and extend a few wires to make them longer) You will need a 0411 pcm with the fuel segment swapped into it, and the tables adjusted. That is it. If you need a PCM with the file already in it I can direct you to a reliable source. I think they are a site sponsor as well but I'm not 100% sure so I cant post their name.
Its that easy. Definately worth it in my opinion. Car responds much better.
I just finished this on my personal 98 car and it works 100% perfect. So any help ya need just look me up.
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