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How much boost with 100 octane

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Old Sep 16, 2006 | 04:24 PM
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Exclamation How much boost with 100 octane

Mods Are!!!!.......HKS INTAKE3' CATBACK,HKS EVC,AL Road Tune,,,,
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Old Sep 16, 2006 | 04:27 PM
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I would only do 24 to be safe.
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Old Sep 16, 2006 | 04:30 PM
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I not an expert or anything but with the better cooling passage on the IX you should be able to run higher than 24 psi in the IX with straight 100 octane. There are alot of people running 23-24 psi on the IX with 93 octane
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Old Sep 16, 2006 | 04:33 PM
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O cool..The reason I ask is because when I go to the track I would like to turn up the boost and add some 100gas....
Originally Posted by kreionic
I not an expert or anything but with the better cooling passage on the IX you should be able to run higher than 24 psi in the IX with straight 100 octane. There are alot of people running 23-24 psi on the IX with 93 octane
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Old Sep 16, 2006 | 04:34 PM
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You won't be on straight 100 octane though. caculate how much regular fuel you have and then how much 100 octane and then get the average and thats the octane in your car.
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Old Sep 16, 2006 | 04:36 PM
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I'm currently boosting 25psi with a mix of 104 octane and 93 octane.
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Old Sep 16, 2006 | 04:41 PM
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Ya I'll do some A/F runs with my wideband.... Just to be safe...
Because right now @20psi I'm seeing 11.4 11.5 A/F on 91pump..
I wanna hit mid 12's...
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Old Sep 16, 2006 | 07:39 PM
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I would think 26-27ish peak with good tuning. I'm able to run 24psi peak dropping to 20.5 by 7k on 93 octain.
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Old Sep 16, 2006 | 07:43 PM
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27psi on 100 oct.
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Old Sep 16, 2006 | 07:49 PM
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It really depends on your tune. Do you have any logging software?
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Old Sep 16, 2006 | 08:09 PM
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Ya I do EVOSCAN and I have a wideband (ZEITRONIX)
Originally Posted by robertrinaustin
It really depends on your tune. Do you have any logging software?
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Old Sep 16, 2006 | 10:05 PM
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From: 2003 Evo VIII - Silver
On straight 100 26 psi should get you well into the 11's

I would suggest head studs

With C16 or a leaded race fuel you can go up to 30 psi peak although it wont hold that very long before it drops down
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