Thread: Back pressure
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Old 02-11-2013, 07:47 AM   #6 (permalink)
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Originally Posted by kanoshee View Post
does my engine need backpressure?
The valve timing will be set up with a certain amount of back pressure in mind ie with a stock exhaust.

Removing all the mufflers and silencers with the intent of reducing back pressure might negatively affect low speed running and driveability - and fuel economy.

Replacing the catalytic converter with a straight pipe shouldn't make much difference.
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