TwinTurbo.NET: Nissan 300ZX forum - Oh there's proof on the NA cats thing
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Subject Oh there's proof on the NA cats thing
     
Posted by SeedyROM on August 13, 2003 at 2:08 PM
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In Reply To No proof on this or if the CAT's on an n/a should be posted by D.E.S.A.T.S. on August 13, 2003 at 02:05 PM
     
Message But it's a bit different.

1) Gutting the cats on an NA will increase top end.
2) Gutting the cars on an NA will decrease low end power/torque
3) Gutting the cats on ANY car creates turbulent flow as the heated air enters a wider chamber, the air swirls and actually slows down, then is forced out. Common sense for decades with exhaust

In summary: Gutting cats on an NA *will* increase top end, *will* decrease bottom end and getting straight pipes/test pipes will always be better than gutting because it keeps the flow constant. :)


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