PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

new pcm on older car?

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Old Mar 7, 2007 | 12:52 PM
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Default new pcm on older car?

I hear the the 97-98 PCM's aren't as good as the newer 99+. I want a 98 car because the fuel tank is easier to mod. Would it make sence to get a newer PCM in the car. I am going to be running a blower with a lot of boost so I figure the newer PCM would be a good idea. I planned on tunning it with EFI live and was wondering would their be any issues with a different year PCM in the car and also would the newer PCM (01) snap right in or are the harness different?
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Old Mar 7, 2007 | 01:04 PM
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harness is different as well.
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Old Mar 7, 2007 | 02:13 PM
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It would make sense to replace the PCM if possible though right? Would their be any problems tunning it? I am sure a different PCM would tell the tuning device it is a different car/different vin number.
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Old Mar 7, 2007 | 02:27 PM
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i would also like to know this???
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Old Mar 7, 2007 | 02:52 PM
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not necessarily...Unless your planning on running 20+psi of boost HPTuners offers a 2 bar custom OS for 98 pcm's meaning you could tune pretty well up through 15psi in SD.
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Old Mar 7, 2007 | 07:29 PM
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No real-time tuning for pre-99's w/ HPT, but I heard re-pinning the packs and re-wiring the dash is a huge PITA.
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