# Gold Class

**URL:** <https://forums.speedlife.net/t/gold-class/192037>\
**Category:** PittSpeed Automotive\
**Created:** [August 26, 2007, 5:43pm UTC](https://forums.speedlife.net/t/gold-class/192037 "2007-08-26T17:43:03Z")\
**Posts on this page:** 1\
**Showing post:** 19

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**Author:** ![Zack01GC](https://avatars.discourse-cdn.com/v4/letter/z/a183cd/32.png) [@Zack01GC](https://forums.speedlife.net/u/Zack01GC)\
**Post date:** [August 28, 2007, 4:48pm UTC](https://forums.speedlife.net/t/gold-class/192037/19 "2007-08-28T16:48:28Z")

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> [@War with Iran?](https://forums.speedlife.net/t/war-with-iran/32178/2):
>
> with the muffler its very quiet… (surprised too since it has a longtube)
> 
> seems like its more powerful with the muffler on too :dunno:

Loss of back pressure without a muffler, probably hurting your torque.

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