98hardtopZ

iTrader: (7)

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

KVU

iTrader: (1)

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

98hardtopZ

iTrader: (7)

where exactly is that stored?

minytrker

iTrader: (13)

in the cluster

LS1FIRE

iTrader: (1)

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?

horist

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

98hardtopZ

iTrader: (7)

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

horist

yes... the cluster stores the mileage

98hardtopZ

iTrader: (7)

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

Runn

:subscribing:

12secSS

iTrader: (30)

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.

2002_Z28_Six_Speed

iTrader: (19)

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.

SMOKINV8

iTrader: (6)

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.

Josh@KY-Turbo

iTrader: (120)

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.

98hardtopZ

iTrader: (7)

do they make a programmer that is decent for the 98 pcm?

MECHAM

iTrader: (4)

hp tuners is releasing a beta version of a 1998 SD 2 bar setup..