# PS & HD, Dyno Day and SHOW! INFO

**URL:** <https://forums.speedlife.net/t/ps-hd-dyno-day-and-show-info/196953>\
**Category:** PittSpeed Automotive\
**Created:** [April 20, 2008, 12:05am UTC](https://forums.speedlife.net/t/ps-hd-dyno-day-and-show-info/196953 "2008-04-20T00:05:23Z")\
**Posts on this page:** 1\
**Showing post:** 96

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**Author:** ![Orr89rocz](https://avatars.discourse-cdn.com/v4/letter/o/ac91a4/32.png) [@Orr89rocz](https://forums.speedlife.net/u/Orr89rocz)\
**Post date:** [May 25, 2008, 5:44pm UTC](https://forums.speedlife.net/t/ps-hd-dyno-day-and-show-info/196953/96 "2008-05-25T17:44:44Z")

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> [@need info on gm supercharger...](https://forums.speedlife.net/t/need-info-on-gm-supercharger/36535/6):
>
> No air filter, no mercy!
> 
> Air filter is so restrictive. Took it off, and picked up ~20whp and ~24 ft/lbs. Guess the tiny Pep Boys delight can’t hang.
> 
> LS1 Miata did a best of 294/311, running so rich it pegged the AF at 10.0, so who knows how rich it really is :greddy:

whats all done to it that its running rich? isnt it mostly stock with bolt ons? stock tune should be ok i would think

maybe you picked up hp since you were so rich, that extra air helped lean things out. I’d get tuned before you decide to ditch the air filter

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