pcm swap

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Apr 3, 2006 | 11:04 PM

98hardtopZ

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From: brandon, ms

pcm swap

if i change a newer vehicle's computer into mine, will the mileage reset?..

Apr 3, 2006 | 11:11 PM

KVU

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everything will reset! not mileage though........

Apr 3, 2006 | 11:15 PM

98hardtopZ

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From: brandon, ms

where exactly is that stored?

Apr 4, 2006 | 01:27 AM

minytrker

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From: Brenham

in the cluster

Apr 4, 2006 | 06:02 AM

LS1FIRE

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I am curious to know this question as well. Will a 01 02 ECU be a direct plug and play for the 98? What needs to be modifed?

Apr 4, 2006 | 06:58 AM

horist

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Mileage is unaffected by the PCM

98 PCMs are the red headed step child of the LS1 world.... 99+ PCMs will not work w/them w/out rewiring the car and repinning the connectors

Apr 4, 2006 | 08:28 AM

98hardtopZ

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From: brandon, ms

dsf...so wait, the mileage is stored in the cluster?

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Apr 4, 2006 | 09:24 AM

98hardtopZ

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From: brandon, ms

has anyone done a pcm swap from a 98 to a newer?

Apr 4, 2006 | 10:28 AM

#10

Runn

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Quote:

Originally Posted by 10.9@1/4

has anyone done a pcm swap from a 98 to a newer?

:subscribing:

Apr 4, 2006 | 11:27 AM

#11

12secSS

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We did it on Jen's race car. It is a 1998 Z28 with a 2001 Calibration. The gauge cluster does not work, for reason's Mike (Horist) posted. But our is a race car, so we don't care about the gauge cluster. I am not sure if the search will work, but it was discussed here a couple of weeks (possibly months) ago.

Apr 4, 2006 | 02:02 PM

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2002_Z28_Six_Speed

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From: Wash, DC

Quote:

Originally Posted by Flame Throwing SS

You would have to either get a new wiring harness or pop out the pins on the harness and reorder them as well as add in some new. It would suck but you could do it.

I would suggest getting a new GM harness and stripping out the car if it was my car. You would even have to remove the entire dash. A lot of work, a lot of time but it will be done right and you can be proud at that.

Apr 4, 2006 | 02:18 PM

#13

SMOKINV8

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I started comparing the harness pinouts from the Conversion forum earlier this morning as I was considering it as well. I figured it would be a small task to re-pin the stock PCM harness.

There's a lot of wiring differences I saw just in the first red connectors. Enough difference that I'd rather just keep using a MAF than deal with half resolution SD, or go through the work to swap to a newer PCM.

Apr 7, 2006 | 09:15 AM

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Josh@KY-Turbo

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So what all has to be changed? If I buy a 2000 PCM and engine harness, do i need to change some sensors and that is it? Or am i going to have to change the underdash harness and guage cluster and everyhtihng else also? I am wanting to go with a 3 bar SD tune in my 98 Z28, but am not really wanting to lose the resoultion or spend the $2800 for BS3.