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Old 04-23-2011, 10:16 PM   #10
1966Stepside
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Join Date: Feb 2011
Location: North, AL
Posts: 135
Re: 5.3l engine knock

Quote:
Originally Posted by clinebarger View Post
You need a exhaust system anyway. I never thought of it as "optional"
It isn't as loud as you'd imagine. If it isnt causing these sensors to pop errors I really don't think I'd put one on
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