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timing under boost and B5908

Old Mar 14, 2015 | 11:35 PM
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Default timing under boost and B5908

Hi Guys,

About to tune a '99 LS1 with cam and procharger, running 12212156-> to COS5.

Two main questions-

1.) to get me started, how much timing should I subtract from A0010? I looked at an N/A tune I know made good power and drove well for my high and low octane spark maps. I have heard I should pull 1° for every 1 pound of boost rule of thumb- does this seem right?

2.) Does B5908 add or subtract timing(IE positive number adds, negative number subtracts)? I am using the COS5 B3647 to command 11-11.5AFR under boost as in the tutorial. My concern is that A0010 will pull timing under boost and B5908 will add it back in.


Thanks!
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Old Mar 15, 2015 | 12:26 AM
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1* per 1 psi of boost is not correct. That would be very conservative.
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