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Old 06-20-2013, 07:35 PM   #25 (permalink)
stewarts2008
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Join Date: Jun 2012
Location: Memphis, TN
Posts: 24
Drives: 2010 370z
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Quote:
Originally Posted by cavemancan View Post
After installing my FI exhaust my gas mileage went back to normal.
so you fixed it? What was it?

If your muffler delete was rattling, then yes, the knock sensors could have picked up vibrations.

Im not sure how loud it was, but if you car was crazy loud, then the knock sensors can pick up on that in general.

any updates?
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2010 370z Touring | K&N Typhoon
2013 Mustang 5.0 | 650 rwhp (sold)
2011 Mustang V6 | 270 rwhp (sold)
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