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What'ss the highest boost level for 93 octane?

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Old Feb 26, 2007, 09:25 AM
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What'ss the highest boost level for 93 octane?
safe boost level ?????
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Old Feb 26, 2007, 09:30 AM
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Wow... Care to be more specific?

What's your current compression ratio?
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Old Feb 26, 2007, 09:30 AM
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20-22 psi to be safe

assume you have a tbe

when boosting more on race gas, arp headstuds is recomended
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Old Feb 26, 2007, 09:32 AM
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I run 22psi personally with zero knock.
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Old Feb 26, 2007, 12:38 PM
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I run between 21-25 on pump gas, no knock.
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Old Feb 26, 2007, 12:51 PM
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22psi on 92 octane here. no knocks so far.
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Old Feb 26, 2007, 02:47 PM
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I have heard of people running up to 25 psi, thats a really thin line though, I try to run between 22-23 psi, make sure you get a fuel pump though, or your going to find out what fuel cut really is.
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Old Feb 26, 2007, 02:49 PM
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i heard anything above 24psi and you start to loose Turbo efficienty(sp?) on the stock turbo....some one know of this??
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Old Feb 26, 2007, 02:55 PM
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yea im running 22-23 psi daily
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Old Feb 26, 2007, 03:03 PM
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Old Feb 26, 2007, 03:55 PM
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hah
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Old Feb 26, 2007, 04:12 PM
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generally 20-22 but it also depends on what your tuned for
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Old Feb 26, 2007, 07:15 PM
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Originally Posted by evovin
safe boost level ?????

What mods have you done to your car? Your specific level of tune can influence knock resistance, and as a consequence, the amount of boost that you can run safely.
Last edited by sparky; Feb 26, 2007 at 07:20 PM.
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Old Feb 26, 2007, 07:17 PM
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it all varies depending on mods and your particular car and fuel,

we have run the evo ix's 25psi on pump.. no knock...

cb
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Old Feb 26, 2007, 07:33 PM
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24psi ok for 06 mr with tbe on 93?
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