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Thread: 411 swap help

  1. #161
    Advanced Tuner Obsolete489's Avatar
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    Probably needs more airflow in the base idle airflow table? Is it doing it just when you come to a complete stop?
    2000 K2500 - 489 CI Vortec w/ comp XE270 cam - 0411 swap and rear mount turbo
    1972 M35a2
    2011 LML Duramax

  2. #162
    Yea i added 2 across the board? When its cold its has a rough time coming to idle. Then when im in gear it wants to puke out but only sometimes?

  3. #163
    Advanced Tuner Obsolete489's Avatar
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    Is it going lean in both cases? I'd keep adding airflow until it runs better, only issue with too much would be the idle will want to hang, I think.
    2000 K2500 - 489 CI Vortec w/ comp XE270 cam - 0411 swap and rear mount turbo
    1972 M35a2
    2011 LML Duramax

  4. #164
    Thank you, it stays running. It surges tho. Also i looked at your timing. What is your method for adding? Do i add across the whole board until i get knock and then use the spark knock graph and subtract where i get knock??? Or is there a way to add in sections?

  5. #165
    Advanced Tuner Obsolete489's Avatar
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    Do you have a log of the surging?

    I adding timing to high map/ cruising & WOT areas until I started to see if kick up little bit of kr, then backed off a bit. Then I used that increase and worked my way back into the lower map areas. I didn't find the limit to what kicked up kr for every region of the table, moreso the medium to high map areas (60-95 kpa) throughout the rpm band. Really light cruise areas I haven't noticed any kr.

    Someday I'll dyno it and see if it wants something different than what I found.
    2000 K2500 - 489 CI Vortec w/ comp XE270 cam - 0411 swap and rear mount turbo
    1972 M35a2
    2011 LML Duramax

  6. #166
    Im having some troubles w my wideband reading different on my gauge than in my hp tuners. How did u wire your plx? I have its own wire straight to my pos and neg on my batt but it is reading 10.? And my gauge is 14.7?

  7. #167
    Advanced Tuner Obsolete489's Avatar
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    Are you using the correct transfer function? It shows the correct AFR on the wideband's standalone gauge? b
    2000 K2500 - 489 CI Vortec w/ comp XE270 cam - 0411 swap and rear mount turbo
    1972 M35a2
    2011 LML Duramax

  8. #168
    Tranfer function? I created a channel and used the already made plx wideband one?

  9. #169
    Advanced Tuner Obsolete489's Avatar
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    Okay that should be correct then. Just to be clear - do you have a standalone gauge for the plx that is reporting the correct afr? Then hp tuners reads it incorrectly?
    2000 K2500 - 489 CI Vortec w/ comp XE270 cam - 0411 swap and rear mount turbo
    1972 M35a2
    2011 LML Duramax

  10. #170
    I was in the wrong one, thanks

  11. #171
    I had taken things out and when i put it back in i thought i used the 2nd port...so i was in the wrong hp tuners slot

  12. #172
    Advanced Tuner Obsolete489's Avatar
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    Glad you got it working.
    2000 K2500 - 489 CI Vortec w/ comp XE270 cam - 0411 swap and rear mount turbo
    1972 M35a2
    2011 LML Duramax

  13. #173
    Man, I just read from page 1. Wow! What a learning curve! All I can say is thanks guys! I couldn't have done it without this forum. I wish I could take you guys out for a beer. I really appreciate the help

  14. #174
    Advanced Tuner Obsolete489's Avatar
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    Its crazy how much there is to learn when first getting started; I know I definitely had a lot to figure out, but that's part of why these forums exist. Happy to help out!
    2000 K2500 - 489 CI Vortec w/ comp XE270 cam - 0411 swap and rear mount turbo
    1972 M35a2
    2011 LML Duramax