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Thread: cammed 07 suburban 5.3 dfco

  1. #1
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    Sep 2021
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    Kentucky
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    cammed 07 suburban 5.3 dfco

    I am working on a 07 suburban with truck norris cam. It is running and idling great if you exclude the 87 octane limiting power. I would like to adjust the dfco to get it functioning and save some fuel. On the gen 3 controllers i normally add 5-7kpa to both map tables, subtract 100-200 from the rpm entry and also bump the spark blending to get these tables functioning after a cam. What are the main tables i will be needing to adjust on the gen 4 pcms? Ive tried to do some research and could not find a old forum with the exact info im looking for.
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  2. #2
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    Sep 2021
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    Kentucky
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    Im thinking i could raise the cylair entry and exit to start off and also reduce the entry spark blend time slightly. Not sure where to start or how much.

  3. #3
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    Sep 2021
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    Kentucky
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    Anyone able to give me some advice on getting the dfco to work? Where would be a good place to start?