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  1. #1

    What AFR's are you seeing?

    Just curious what climate/AFR's/Tune's people are seeing.

    Waiting to get a modified Stage 1+ Tune back from Riva, was breaking the new motor in (Gp1800R) and seeing 13.5-13.7 while idling and 12.8-13.5 range at WOT @ 75° OAT 50 Humidity which is rather lean.

  2. #2
    raiderx72's Avatar
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    13.5 is way lean imo 11.8 12.2 on pump gas my rule of thumb wot. Idle 13s 14s. Mid same then lean out. To 11.8 12.2. My deans tune is pretty much spot on.

  3. #3
    SOV's Avatar
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    You will blow the engine at 12.5 to 13.5 wot !!! You need more fuel pressure...

    S

  4. #4
    xkon's Avatar
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    In before engine number 4


  5. #5
    So going back and forth with Riva - who says Stock tune is fine to run with 4" CAI and Exhaust, clearly is not the case!

    I had them modify the Stage 1+ with a 8K limiter and ran it tonight - Idling mid 13's, 5k about 12.6, and WOT 11.7-12.2

  6. #6
    raiderx72's Avatar
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    11.7 12.2 is alright in my book

  7. #7
    JESUS G's Avatar
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    This is a screenshot of a log file from a complete Stock GP1800... Out of the box.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  8. #8
    isa alnoaimi's Avatar
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    Quote Originally Posted by JESUS G View Post
    This is a screenshot of a log file from a complete Stock GP1800... Out of the box.
    can you show us also the timing ignition ?


  9. #9

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    I have a 2017 with the 1+ @ 128 hours and the Y100 intercooler with a Tial BOV. At flat idle I'm around 13.6-13.8, mid-range hovers in the low 12 to mid 12s and WOT is as low as 10.9-11.2

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