# Gutting a catalytic converter

**URL:** <https://forums.speedlife.net/t/gutting-a-catalytic-converter/50599>\
**Category:** NYSpeed Automotive\
**Created:** [June 25, 2008, 2:57pm UTC](https://forums.speedlife.net/t/gutting-a-catalytic-converter/50599 "2008-06-25T14:57:13Z")\
**Posts on this page:** 1\
**Showing post:** 44

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**Author:** ![MaximaSE98](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/maximase98/32/7600_2.png) [@MaximaSE98](https://forums.speedlife.net/u/MaximaSE98)\
**Post date:** [June 26, 2008, 8:37am UTC](https://forums.speedlife.net/t/gutting-a-catalytic-converter/50599/44 "2008-06-26T08:37:36Z")

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you would be surprised…but it all does vary from car to car…my setup was 2.25 piping from catless header to tailpipe. no cats in between with a 2.5" dia. 22’ long resonator. I had a terrible terrible rasp. The exhaust and header are same company (Stillen) I added a 2.5" Hi-flow magnaflow spun cat and totally changed my exhaust not a eliminated 90% of the rasp

the cat back helped with rasp that I had with stock catback and header/midpipe no cats

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