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Old 10-29-2012, 06:59 AM   #11
Magus2727
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Join Date: Feb 2009
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What I Drive: 2001 MB ZX3, 2004 SY SVT ZX5

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Quote:
Originally Posted by markwb View Post
Doesn't the engine require the back pressure from the muffler to run properly. I've thought that the exhaust valves will get burnt w/o some type of back pressure. Is this true or not?
Generally the CAT is able to provide enough back pressure removal of the rest of the exhaust will not remove enough back pressure to burn valves.
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