swapping computer ?s
Thread Starter
Heel & Toe
Joined: Mar 2009
Posts: 15
Likes: 0
From: Ahwatukee AZ
swapping computer ?s
I have a 92 vette. Wondering if anyone has put a newer computer from a 95 into the 92 in order to use PCM mail order tunes since they arent available for the older chips. I really dont want to go through the hassle of getting data writers and erasers as stated in the sticky tuning thread
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
If you REALLY love your car you could get the harness as well so that you could use the 94/95 PCM, that's the only way it will work, with another harness. I'm putting a Painless 60505 in my 96' right now (for other reasons)
Race Director
Joined: Feb 1999
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From: Indianapolis IN
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Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Ehh.. BCM might error.
Some things won't work right.
The 92+ cars, wiring is a disaster. Too much work, and it will never be right.
1992 = $DA2 binary, which you can get a mail order or you can get an emulator and tune real time.
-- Joe
Some things won't work right.
The 92+ cars, wiring is a disaster. Too much work, and it will never be right.
1992 = $DA2 binary, which you can get a mail order or you can get an emulator and tune real time.
-- Joe
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
I looked into this in detail -- if the search works, you will find it.
There are a lot of things to consider -- in the end, the best way was to sell the '92 and buy the '95....probably a lot cheaper too.
Tom Piper
There are a lot of things to consider -- in the end, the best way was to sell the '92 and buy the '95....probably a lot cheaper too.
Tom Piper
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
All the above being said, you can make this work, but I would have to say I probably agree with Tom for the most part. No telling what problems you'll run into, the CCM is really the biggest problem, CCM controls pretty much freaking everything other than the engine, which is why I have gotten rid of mine and I'm just using a regular Street Rod harness for everything. Car will be FAR simpler now from a wiring perspective. But that's pretty extreme for most!
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
I was going to do a '91+ dash swap, but the CCM end of it turned me off. If the '91+ dash had a mechanical odometer it would have been great.
-- Joe
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
My car is a 96' but when I was running with a 95' PCM ALL the CCM stuff worked perfectly, other than the blinking SYS light. But all the dash stuff worked fine.
Now I have ripped out all the CCM stuff, new Painless harness has a wire that you can run to speedo
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Now or before?
My car is a 96' but when I was running with a 95' PCM ALL the CCM stuff worked perfectly, other than the blinking SYS light. But all the dash stuff worked fine.
Now I have ripped out all the CCM stuff, new Painless harness has a wire that you can run to speedo
My car is a 96' but when I was running with a 95' PCM ALL the CCM stuff worked perfectly, other than the blinking SYS light. But all the dash stuff worked fine.
Now I have ripped out all the CCM stuff, new Painless harness has a wire that you can run to speedo
I realize that the PCM will output the 4k PPM signal to drive the actual speedometer, but the odometer is stored in the CCM flash memory.
That is the huge heartbreak. I didn't want a car that would have a ZERO readout on the mileage.
-- Joe
Thread Starter
Heel & Toe
Joined: Mar 2009
Posts: 15
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From: Ahwatukee AZ
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
Yes, but the odometer is contained in the CCM, so your car won't display mileage.
I realize that the PCM will output the 4k PPM signal to drive the actual speedometer, but the odometer is stored in the CCM flash memory.
That is the huge heartbreak. I didn't want a car that would have a ZERO readout on the mileage.
-- Joe
I realize that the PCM will output the 4k PPM signal to drive the actual speedometer, but the odometer is stored in the CCM flash memory.
That is the huge heartbreak. I didn't want a car that would have a ZERO readout on the mileage.
-- Joe
I'll have this car til' I'm dead so keeping existing mileage value is not an issue. If you are reselling yeah I see where that would be a concern.