# Dr.Jekyll Exhaust = works well on new setup

**URL:** <https://forums.speedlife.net/t/dr-jekyll-exhaust-works-well-on-new-setup/119909>\
**Category:** SON240sx Automotive\
**Created:** [November 16, 2008, 4:47am UTC](https://forums.speedlife.net/t/dr-jekyll-exhaust-works-well-on-new-setup/119909 "2008-11-16T04:47:22Z")\
**Posts on this page:** 1\
**Showing post:** 27

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**Author:** ![Theo23](https://avatars.discourse-cdn.com/v4/letter/t/43a26b/32.png) [@Theo23](https://forums.speedlife.net/u/Theo23)\
**Post date:** [November 17, 2008, 10:39pm UTC](https://forums.speedlife.net/t/dr-jekyll-exhaust-works-well-on-new-setup/119909/27 "2008-11-17T22:39:13Z")

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> [@coming soon.....](https://forums.speedlife.net/t/coming-soon/19155/2):
>
> With the dump closed, the car idles as quitely as a stock Honda Accord. Cruising the car is almost inaudible, perfect for having a conversation or listening to tunes. Open, the car transforms into a race car, loud, responsive and obnoxious.

I guess noone here knows who Dr.Jekyll **OR** Mr. Hyde are…

So Dan, the valve is a tight seal? No leak noise at all? I’ve always wondered that about those units.

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