timing under boost and B5908
03-14-2015, 11:35 PM
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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!
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!
