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Thread: Low cylinder airmass ? please help

  1. #1
    Advanced Tuner
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    Jul 2014
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    218

    Low cylinder airmass ? please help

    this is a LSA g8, E38 ecm 102mm Tb , 5" intake with lsa MAF, 1000 cc injectors

    last ride 10 45.hpl

    white g8 rona started from scratch low ve and coiffeianct at 1.4.hpt

    Now I had to scale back the Maf FQ for the 5" but it should of lost this much from that. Ive done a similar setup and gram per cylinder was still over 1.0
    This car max is .72

    kpa is reading what it should be at 185, my big Problem is being so low its really impacting my transmission torque values and etc

    Could incorrect injector data miss calculate the Cylinder air mas ?

    What are my options on increasing the Gram per cylinder ?

    I assume if I just scaled down my gram per cycl vs high octane table that still wouldn't fix my calculated torque tables would it ?

    what is off in my tune or will I have to cheat this somehow for the 5" intake ?


    will the old double stoich half afr trick work for me ? I feel like that will make it worse but my injector data isnt really 100% right now
    ...
    Last edited by Maxspeed96ct; 09-24-2020 at 11:37 PM.

  2. #2
    Advanced Tuner
    Join Date
    Oct 2013
    Posts
    211
    Your injector flow data is not setup correctly, assuming your injectors are 1000cc (95.2 lb/hr)at 43.5psi that puts them at 110 at 58psi. I would scale everything by 1/2.

  3. #3
    Senior Tuner Ben Charles's Avatar
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    Aug 2009
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    When I see crazy air mass which directly relates to engine Tq, always tells me that IFR is wrong

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