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Thread: LS1B Chopacabra cam Magnuson Super I feel like im drowning.

  1. #1
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    Default LS1B Chopacabra cam Magnuson Super I feel like im drowning.

    I am struggling to get anywhere with the tunning this is my first time trying to tune a vehicle. I have read several forum posts and have figured out how to get the truck to idle but now it seems really fat on the tune and I don't seem to understand how to lean it out properly. I am willing to learn anything someone has to offer thanks in advance for your time and knowledge.

    05 GMC Yukon XL with a 6.0L
    Texas Speed Chopacabra Cam 214/222
    Delphi 42# injectors 58 PSI from fuel pump
    Magnuson Magna charger 8 PSI
    .020 over bore

    Here is a short log let me know if I have something out of place or need more data please.
    porter log 3.pldporter log 3.pld

  2. #2
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    Post your tune

    Whats the part number on the injectors?

  3. #3
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    The Injector Part # 25176061

    I did a study a tune LQ4 LSA that someone else posted and I tried to understand more which lead me to add a boost VE table and changing my main VE table here is the new tune and a data log from current tune. Thanks for your reply.6.0 SC 1.ctz6.0 sc log 1.pld

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    Need to know what MAP sensor you have.
    Here is just a startup deal.
    Attached Files Attached Files

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    Map sensor Part# 09359409 3 Bar

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    Thank you I will be going over that file so I can try to understand more about the tunning side.

  7. #7
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    I installed the tune hoping to get a log and it instantly popped.

    P0103 Mass Air Flow (MAF) Sensor Circuit High Permanent ($01) EPA-Perm, Supp

    I did capture a short log at idle if it helps.

    nonnieselman log.pld

  8. #8
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    Quote Originally Posted by Built Tech View Post
    Map sensor Part# 09359409 3 Bar
    That is showing to be the factory 1 bar map..

  9. #9
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    Thank you I see that now that you pointed it out. I looked at one on Amazon and it was the wrong information. Would you recommend a different map or will this one suffice?

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    https://www.pcmofnc.com/2020/03/12/g...r-2-bar-3-bar/

    I would use the 2 bar on the top left in this picture. Its plenty for 8psi.

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