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Just intalled Mac Mid's, do i need a tune?

This is a discussion on Just intalled Mac Mid's, do i need a tune? within the External Engine forums, part of the LSx Technical Help Section category; I went with Mac Mid legnth and off road cat. Do I need a tune? If so how important is ...

  1. #1
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    Just intalled Mac Mid's, do i need a tune?

    I went with Mac Mid legnth and off road cat. Do I need a tune? If so how important is it?

  2. #2
    Senior Member ninobrn99's Avatar
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    all bore 370 Trans Am

    you'll run a bit richer without a tune so u wont see the full potential gain. It wouldnt hurt to get it done if you dont plan on a cam install anytime soon. Also, some shops offer a free retune, so ask bout that. You can get the cam tuned later if they do.

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