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Go Back   IWSTI.com: Subaru STI Forums > STi GR Series Discussion (2008+) > 2008 STI Discussion


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Old 04-14-2008, 01:02 PM   #16
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Default Re: most HP out of 08 without turbo mods

One could have the stockers extrude honed too


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Old 04-14-2008, 02:42 PM   #17
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Default Re: most HP out of 08 without turbo mods

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One could have the stockers extrude honed too
You can only take the stock manifold so far no matter what you do to it, and extrude honing is expensive. Seems like a waste of money.
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Old 04-14-2008, 11:36 PM   #18
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Default Re: most HP out of 08 without turbo mods

im living in Poland.
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Old 04-15-2008, 01:23 AM   #19
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Default Re: most HP out of 08 without turbo mods

Since you asked for the most hp on a stock turbo here ya go...

381awhp 497awtq on a Stock Turbo'd 07 w/ meth
YouTube - Monster TQ Stock turbo '07 STI with Aquamist

dont hate on Dynoflash
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Old 04-15-2008, 05:05 AM   #20
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Default Re: most HP out of 08 without turbo mods

Can someone tell me what meth does exactly and how much wear and tear a kit like that incurs on the engine? I'd really like to know since I see a lot of folks using meth.
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Old 04-15-2008, 05:24 AM   #21
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Default Re: most HP out of 08 without turbo mods

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Can someone tell me what meth does exactly and how much wear and tear a kit like that incurs on the engine? I'd really like to know since I see a lot of folks using meth.

Tired of Water or Water & Methanol Injection Questions? I AM!
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Old 04-15-2008, 10:55 PM   #22
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Default Re: most HP out of 08 without turbo mods

I had never thought of the corrosive properties of meth. Hmm...
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Old 04-16-2008, 05:07 AM   #23
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Default Re: most HP out of 08 without turbo mods

Thanks twigg....should have used that search button...my bad.

Well I plan to go full stage 2, probably a complete package including up-pipe and headers. Like I said, I want over 300whp and 400 ft-lbs of torque. I don't know if that's realistically achievable (without meth or upgrading the stock turbo).
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Old 04-16-2008, 05:07 AM   #24
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Default Re: most HP out of 08 without turbo mods

using meth seems kinda expensive and risky... why subaru does not make H6 TT STI is beyond me... i dont think its about the wrc since the usdm is already .5L more than the allowed 2L displacement... im totally willing to pay $40k base for H6 TT.
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Old 04-16-2008, 09:38 AM   #25
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Default Re: most HP out of 08 without turbo mods

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Originally Posted by JuggernautTCW View Post
using meth seems kinda expensive and risky... why subaru does not make H6 TT STI is beyond me... i dont think its about the wrc since the usdm is already .5L more than the allowed 2L displacement... im totally willing to pay $40k base for H6 TT.
most likely it's a cost issue.


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