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What numbers after Mac off road headers

This is a discussion on What numbers after Mac off road headers within the External Engine forums, part of the LSx Technical Help Section category; I ran a 13.19 @ 108 last time at Milan, MI. All I had was Corsa catback, HPP3, SLP lid ...

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    Junior Member dhillyard's Avatar
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    What numbers after Mac off road headers

    I ran a 13.19 @ 108 last time at Milan, MI. All I had was Corsa catback, HPP3, SLP lid with k&n, STB, Short stick.

    Just got My Mac headers with ORY hooked up without a tune and an open cutout right after that with SFC's. Just wondering what I should run without a tune, and with a tune?

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    M6 King Hot Black Trans-Am's Avatar
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    Your avatar is giving me a headache...

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    Member Tman's Avatar
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    Just get on the track and find out after a few runs.

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