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Thread: ctsv breaking up on the top

  1. #1
    Tuner
    Join Date
    Oct 2012
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    gadsden al
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    161

    ctsv breaking up on the top

    so we have an 09 ctsv that has a 2.45 upper and i have addeed the log. the maf is stopping at 86.69lbm for some reason and i am seeing engine tq stop at 640 like i am hitting some load limit what did i miss. timing is safe at 20* and the pump is turned up to 600 kpa as well cady last chance 1.hptcady last run.hplcady 3 good rips.hpl

  2. #2
    Advanced Tuner
    Join Date
    Feb 2018
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    295
    A quick look and it looks like you are getting a few mis fires....did you re-gap your spark plugs after installing the 2.45 pulley? and that is definitely weird how your maf just stops like that...
    Last edited by sgod1100; 20 Hours Ago at 09:57 AM.

  3. #3
    VE airflow stops at 512.0 g/s (67.73 lb/m), and MAF airflow stops at 655.4 g/s (86.69 lb/m) in the scanner. Dynamic Airflow keeps on going though. Log all three and you'll see it.

  4. #4
    Advanced Tuner PGA2B's Avatar
    Join Date
    Nov 2004
    Location
    St. Louis, MO
    Posts
    339
    What mods have been done?
    2013 OBM A6 CTS-V Coupe
    Mods: 8.6 Lower, ID850's, NGK TR7IX's, Spectre CAI, SRI Ported TB, SRI Catch Can, NGK AFRM, 160* T-Stat, 0fx2gv Brick, 3/4" Lines, FB 101 Front Mount HX, Pierberg CWA50, Billy Boat Exhaust, Stoptech Drilled & Slotted Rotors, EBC Redstuff, Cut Stock Springs, 6K HID Fogs, Full ATS-V Emblem Conversion, Full LED Conversion
    Mod Pile: ZPE Griptech 2.45 pulley, Solid Isolator
    2006 Black Raven STS-V (Traded In)
    Fully Modded: 459RWHP@5888rpm/451lbft@4696rpm

  5. #5
    Tuner
    Join Date
    Oct 2012
    Location
    gadsden al
    Posts
    161
    we found some of it got it back on the dyno an fuel pressure is not holding good its dropping out . didnt lean out on the dyno with less load to turn the drum put some load on it with the eddie brake and load goes nuts injector being to open to add more fuel to. we just have the a 2.45 and bre7ef ngk gap at 35