# SGM Long Tube Header Development - 30whp Gain!

**URL:** <https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810>\
**Category:** Vendor Marketplace\
**Created:** [November 11, 2008, 4:24pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810 "2008-11-11T16:24:45Z")\
**Posts on this page:** 1\
**Showing post:** 38

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**Author:** ![Pants](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pants/32/5590_2.png) [@Pants](https://forums.speedlife.net/u/Pants)\
**Post date:** [December 1, 2008, 8:32pm UTC](https://forums.speedlife.net/t/sgm-long-tube-header-development-30whp-gain/119810/38 "2008-12-01T20:32:04Z")

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> [@OFFICIAL Buffalo Sabres Thread](https://forums.speedlife.net/t/official-buffalo-sabres-thread/25170/731):
>
> Sorry, but I’m confuzed; “every gear would result in exactly the same power”?
> 
> how would this be possible? Each gear before 5th(asuming 5th is a 1:1 ratio) would be a power “multiplyer”.  
> Does the dyno know what gear you are in?  
> Calculating the gear ratio every time?  
> does the dyno know the final drive?  
> what happens, lets say, if your in 4th?
> 
> Im not an expert on dynos, but am very curious about their power ouputs. As after my winter mods I would like to know the acctual wheel hp output of my own vehicle.
> 
> Thanks!

i think the dynapack makes up fo that

because u enter the final drive and all that shit into the computer first

so it does not matter

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