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Discussion Starter #1
if i install a highflow cat on my 99 maxima with a stock exhaust will it sound better and produce more power or vice versa?

thanks in advance
 

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In Ur Threadz - Deleting!
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Sound or performance change will be negligible if at all...now, a high-flow cat working in a series with full exhaust would help.
 

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There's a balance between backpressure and power, you may lose power you may gain some... either way it won't be much. If you want power you can feel get nitrous.
 
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