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10-16-2013
so I've been doing a bit of reading and keep seeing that the PCM on 08 Grand Prix's is restricting as far as tuning goes, but none of the sources seemed too sure, is this something I should be concerned with? is it an easy fix? whats the best road for me to take?
10-16-2013
I don't think you can tune them at all
10-16-2013
They are a different PCM than the previous years, they also use a can bus system.
I don't know of any company that has supported that PCM.
For base model that is.
The GXP model from 05-08 can be tuned because its a different pcm style.
10-17-2013
Good chance there is no reason to try to go through the mess that is tuning these.. What do you need to have tuned?
10-18-2013
Talk to Will @Overkill he can tune them.
My buddy had Will tune his 08.
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