# Dual Exhaust on a s13

**URL:** <https://forums.speedlife.net/t/dual-exhaust-on-a-s13/103875>\
**Category:** SON240sx Automotive\
**Created:** [February 19, 2007, 11:11am UTC](https://forums.speedlife.net/t/dual-exhaust-on-a-s13/103875 "2007-02-19T11:11:13Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![BAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bas/32/5540_2.png) [@BAS](https://forums.speedlife.net/u/BAS)\
**Post date:** [February 28, 2007, 12:45pm UTC](https://forums.speedlife.net/t/dual-exhaust-on-a-s13/103875/15 "2007-02-28T12:45:15Z")

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the new superseals are a different Bi-metal and heat treating combination, they also add a high temp wear in coating. They’ve been testing these for the last year and a half on 2-3 rotor drag cars with great success.

> [@Person above you thread](https://forums.speedlife.net/t/person-above-you-thread/11497/136):
>
> ah alright bas, are those the carbon seals?

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