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re-tune?

   
Old 07-17-2009, 11:58 AM
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Default re-tune?
If i put headers and true duals on a vortech car, does it have to be re tuned?
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Old 07-17-2009, 02:13 PM
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No it doesn't have to be retuned.
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Old 07-17-2009, 05:27 PM
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nope, but if you got rid of any emmisions control when got headers (EGR, AIR, cats) your computer will throw an SES code unless they were previously tuned out
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Old 07-17-2009, 09:03 PM
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At a minimum I would put it on the dyno with a wide band to make sure your AFR is still good and safe. Here is the GMHTP article where they added headers to a GTO with a vortech and it picked up 50hp:
http://www.gmhightechperformance.com...ion/index.html
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