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  1. Steve White PCM? Or PCM Tune?

    Dodge Challenger R/T Specific
    So i decided to get either a steve white scat pack pcm or just add a 87MM Throttle Body and get a tune for that with my bigger airaid intake. My question is which would be better? For performance. Also Can someone tell me more about johan, or anyone that can do a tune on my PCM? Like the...
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