I want to add some extra muscle to my car but nobody makes anything worth while that I can find. I know that APR makes a ecu upgrade that would give a 4.2 an extra 50 horses, but they start making them for 02 and up. What gives with that? What is so different about the 01 to 02? Just curious and also if anyone knows of anything then please let me know. Thanks,
Luke

 

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