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Supra Shane
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Discussion Starter #1
ok ive got a stock block and head...nothing has been changed. I have AEM with 850cc's and and a 66mm turbo and want to know what the best timing would be for pump gas and be safe at 18-20psi on 93octane. What would the most but still safe boost I can run on pump? Thanks
 

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wastegate hose is pulled
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This is going to vary from car to car depending on quite a few variables. If you can't tune the timing properly, just keep it conservative, like less than 10 degrees @ peak torque and 20 psi.
 

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Registered
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i can tell you this, on a similar setup, im running 20 degrees at 10psi with no problems...A/F @ 11.8
 
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whatever doesnt cause knock. just monitor the knock sensors. when the voltage starts going up over specs your timing is too high.
 
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