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PCM Diagnostics & Tuning HP Tuners | Holley | Diablo
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Can someone confirm

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Old 08-21-2013, 10:37 AM
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Maybe you can help. I bought 3 2002 PCM's for 3 projects used 6 of my 8 credits to unlock 2002 trucks used last 2 to unlock custom operating system for SD now I find out I can only get 2 bar. do i need to flash stock OS then go to 3 bar?

Btw I'm using hp tuners
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Old 08-21-2013, 07:44 PM
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got pcm swapped from 2003 DBW to 2002 DBC
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Old 08-22-2013, 07:22 AM
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Ok found 2002 silverado that had OS that supports 3bar. Do I need to change vin and use that OS to upgrade from
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Old 08-22-2013, 09:44 AM
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Unfortunately I think you will have to spend 4 more credits. I had my ecu go out and swapped it and cost me 4 additional credits.
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Old 08-22-2013, 12:24 PM
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found out my pcm is for 8.1 with allison transmission
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