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Thread: BBK 95 mm throttle body Tuning 2013 Camaro SS Auto - barely starts then stalls.

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    Default BBK 95 mm throttle body Tuning 2013 Camaro SS Auto - barely starts then stalls.

    A buddy of mine installed a BBK 95 mm throttle body on his 418 LS3 Automatic (VVT/DOD delete). Tuned and runs perfect on the stock 90 mm TB. I have run a BBK 95 & 102 on my 2010 Camaro SS Automatic without any issues with a Whipple Supercharger.
    I changed in the tune (95mm):
    B1650: 5636 to 6350
    C0803 , C0804, C0805, & C0806 to the same values I used in my 2010 supercharged Camaro SS.
    Is there something I'm missing? It works in the 2010 any thoughts?
    Thank You
    Attached Files Attached Files

  2. #2
    Joe (Moderator) joecar's Avatar
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    What is the cam specs on the 418...?

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    It's a small Comp Grind: 219/235 .624/.624 113+4.

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    Joe (Moderator) joecar's Avatar
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    Is this with the same ECM that came in the car (2013 Camaro SS)...?

    Does it stall within 2-3 seconds of starting...? Log the pid GM.VTD to see if VATS is preventing fuel.


    edit: fixed typo.
    Last edited by joecar; June 27th, 2016 at 09:40 AM.

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    I have had it run for more than 30-45 seconds by giving the car a little throttle. When I let off the TB seems un-responsive and the car stalls out. It is the same E38 ECM that was stock with the car. The car runs and was tuned with the stock 90 mm without any issues. This throttle body came off my car and works perfectly on my 2010. I put a 102 on my car without an issue. I don't have the car with me right now. I can log GM.VYD the next time he is around.

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    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by DaveGuy View Post
    ...

    I can log GM.VYD the next time he is around.
    sorry, I misspelled it, it should have said GM.VTD...

    if the engine runs more than 2-3 seconds, then VATS is not what is shutting it off, so there is no further need to log GM.VTD.

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    Do you see anything in the tune file that might be causing the issue?

  8. #8
    Joe (Moderator) joecar's Avatar
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    You may need to increase idle desired air...

    but typically something like this (displacement/cam) usually starts and idles on the stock tune.

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    I played with the minimum idle air and put some pretty big numbers in there and it no response or change. It really makes no sense. In my 2010, I swapped it in and it just worked. I'm just wondering if the 2013's have some additional parameter that I am missing.

  10. #10
    Joe (Moderator) joecar's Avatar
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    I'm looking thru your files...

    you may have to do idle tuning, see here: E38-idle-tuning

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