# Legality of replacing a working catalytic converter with a better one

**URL:** <https://community.cartalk.com/t/legality-of-replacing-a-working-catalytic-converter-with-a-better-one/105009>\
**Category:** Power/Fuel\
**Tags:** cl, acura\
**Created:** [June 17, 2017, 3:35am UTC](https://community.cartalk.com/t/legality-of-replacing-a-working-catalytic-converter-with-a-better-one/105009 "2017-06-17T03:35:08Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![sgtrock21](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/sgtrock21/32/246_2.png) [@sgtrock21](https://community.cartalk.com/u/sgtrock21)\
**Post date:** [June 18, 2017, 12:32am UTC](https://community.cartalk.com/t/legality-of-replacing-a-working-catalytic-converter-with-a-better-one/105009/21 "2017-06-18T00:32:48Z")

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I think the best way for OP to improve performance and fuel mileage is to purchase a vehicle with better performance and fuel mileage. Headers and new cat are not going to result in any appreciable difference.

[Previous page](https://community.cartalk.com/t/legality-of-replacing-a-working-catalytic-converter-with-a-better-one/105009.md?page=1)