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 Post subject: Max boost on 91 octane gas ?
PostPosted: Mon Apr 10, 2017 7:45 am 
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Joined: Tue Jun 07, 2011 11:29 am
Posts: 13
Location: Montana USA
I built a turbo system on my 93 GT. It's a completely stock engine with 142000 miles on it. It has one of GTaye's turbo chip and a Chinese t25 with a 2'' cat back exhaust. It will be used mainly above 5000 feet in elevation. I'm wondering how much boost I can run on this 91 octane gas that we get at most places. Iv'e heard that 8 pounds should be about the limit.


Ken.........


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 Post subject: Re: Max boost on 91 octane gas ?
PostPosted: Mon Apr 10, 2017 8:04 am 
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Joined: Sat Feb 05, 2005 6:51 pm
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Location: Chch - Quake Capital
Hey Ken

I think your 91 is higher octane than our 91, something to do with mon and ron? hopefully someone else with more knowledge will chip in.


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 Post subject: Re: Max boost on 91 octane gas ?
PostPosted: Mon Apr 10, 2017 9:31 am 
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Joined: Tue Jun 07, 2011 11:29 am
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Location: Montana USA
Our pumps say RON+MON/2 fore what that means.


Ken........


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 Post subject: Re: Max boost on 91 octane gas ?
PostPosted: Mon Apr 10, 2017 12:37 pm 
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Joined: Sat May 12, 2007 12:40 pm
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Location: penriff
For what it's worth what we call 98 octane is close to the equivalent of 93 (ron+mon/2) in the states.

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 Post subject: Re: Max boost on 91 octane gas ?
PostPosted: Tue Apr 18, 2017 4:13 pm 
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Location: Adelaide SA
10 PSI tops. as thats almost on the limits of the sensors.. 8Psi to keep things safe.

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