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EVO III Monster
 Post subject: WTK STi Exhaust
PostPosted: Sat Dec 10, 2011 11:21 am 
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Ricer
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Joined: Mon Feb 09, 2009 2:15 pm
Posts: 19
how come the 05 STi dont rumble like the older model onez?


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VexXx Dogg
 Post subject: Re: WTK STi Exhaust
PostPosted: Sat Dec 10, 2011 12:34 pm 
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Has to do with the exhaust manifold design for efficiency.
Older sti's and recent WRX's came with a single scroll setup with an unequal length manifold.
Your STI has equal length manifold and a twinscroll turbo. It does not rumble like the older scoobys, but it sounds awesome with a proper exhaust.

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EVO III Monster
 Post subject: Re: WTK STi Exhaust
PostPosted: Sat Dec 10, 2011 4:29 pm 
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Ricer
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ok thanks
so if i get the unequal length headers i would get the rumble then.

i installed a full 3.5 inch stainless steel exhaust already but i wha the rumble..lol
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VexXx Dogg
 Post subject: Re: WTK STi Exhaust
PostPosted: Sat Dec 10, 2011 4:43 pm 
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It wont work properly and you will lose a lot of performance!
Talk to barry, he can give you some options, but I thought you wanna leave this one stock

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Jimbo
 Post subject: Re: WTK STi Exhaust
PostPosted: Tue Dec 13, 2011 10:03 am 
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3ne2nr Toppa Toppa
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RICE lol!
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Romany
 Post subject: Re: WTK STi Exhaust
PostPosted: Tue Dec 13, 2011 10:17 am 
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VexXx Dogg wrote:
Has to do with the exhaust manifold design for efficiency.
Older sti's and recent WRX's came with a single scroll setup with an unequal length manifold.
Your STI has equal length manifold and a twinscroll turbo. It does not rumble like the older scoobys, but it sounds awesome with a proper exhaust.


Correct! I recall seeing a legacy switching to a single scroll setup from a twinscroll but I very much doubt you want to do that with your STi just to rumble...
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