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150 shot with sunoco 104 octane how much timing?

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Old 12-15-2008, 12:28 AM
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Default 150 shot with sunoco 104 octane how much timing?

Hey guys im going to be sqeezing a 150 shot through the car here in the next couple of days. I usually squeeze a 100 shout and i pull bout 2 degree with the sunoco 104 just to be safe. my question is do you think that i could leave it at 2 degree with that much octane. i have had pcm for less tune the car but not for n20. So I think that they advanced the timing 2 degrees. my mods are listed below
Old 12-15-2008, 10:01 AM
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For a 150 shot I would start by pulling 4-5* of timing
Old 12-15-2008, 12:32 PM
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so I should pull 6 degrees since it was advanced 2 degrees by pcm forless?
Old 12-15-2008, 12:59 PM
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no...4-5* from your NA timing.
Old 12-15-2008, 05:54 PM
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cool thatnks for the help!! by the way i am running your lt1 plate setup and i love the way it works.
Old 12-15-2008, 06:01 PM
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I would get a acurate reading of your A/F before you spray. are you mixing the 104, stand alone, or just straight 104?
Old 12-16-2008, 04:12 PM
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Originally Posted by black01_WS6
I would get a acurate reading of your A/F before you spray. are you mixing the 104, stand alone, or just straight 104?
i would say 80 % 104 with 20% 91
Old 12-16-2008, 05:04 PM
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With that gas...0-3 degrees probably.

26 degrees would be what i would do.
Old 12-16-2008, 05:39 PM
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find out what your timing is at N/A and pull timing accordingly. you may need 5-6 degrees or 3-4 depending on what your timing is right now.
Old 12-16-2008, 09:34 PM
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yea whats timing n/a and then whats timing on the 100 shot
Old 12-19-2008, 03:10 PM
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Originally Posted by starbucks
Hey guys im going to be sqeezing a 150 shot through the car here in the next couple of days. I usually squeeze a 100 shout and i pull bout 2 degree with the sunoco 104 just to be safe. my question is do you think that i could leave it at 2 degree with that much octane. i have had pcm for less tune the car but not for n20. So I think that they advanced the timing 2 degrees. my mods are listed below
well if you are going 100 hp now and 2 degree of timing out.. then go 3 degrees is ok. rule of thumb is 1 degree for every 50 hp
Old 12-19-2008, 05:38 PM
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i'd leave it where it is (-2*) with the racegas.

Last edited by sleeperstyle; 12-19-2008 at 05:44 PM.
Old 12-19-2008, 09:54 PM
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I run 22 degrees on 150 shot
Old 01-02-2009, 11:38 AM
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Pull the standard 6* back for the safety part of it and creep up. With the race gas in it you may get back to -2* or -3*. Watch your knock retard under load and adjust. Fine tune the fuel to get your AFR readings after the timing has been set. Then go back to check your timing and make sure your safe under load. Good Luck.




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