Results 1 to 10 of 52

Thread: "Breaking up" when in boost?

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Lifetime Member
    Join Date
    Oct 2005
    Posts
    551

    Default "Breaking up" when in boost?

    Engine is running nice and smooth idling or cruising, but when I get into boost it wants to break up badly. No misfires logged. Taking a look at this log I think this corresponds to intermittent AFR dips into the 9's on WO2AFR1 which I think is actually on bank 2. Not that I trust the accuracy of the dual LC1s, but it looks like there is a correlation here. A free air cal was done immediately prior to this log.

    Motor has fresh coils, wires, plugs which definitely improved how it runs otherwise, but didn't help with this issue. Injectors are also new this year - ID1000 high Z. Current plugs are 8's gapped at .025. Any ideas? Take a look the spots where I give it some throttle and check out the WO2 traces. Didn't have this issue last year before the rebuild.
    Attached Files Attached Files
    2017 Camaro SS, 2014 Ram 2500 4x4 Cummins 6.7L, 2004 Chevy Avalanche Z71 4̶X̶4̶(now 2WD), 5870lb race weight, 10.93@ 124, Twin TVS1900s, Twin Throttle, 429 LSX, 4L80E, custom 14 bolt rear, V2, R̶o̶a̶d̶R̶u̶n̶n̶e̶r̶(dead), COS3......
    Gettin' the Groceries

Similar Threads

  1. Replies: 3
    Last Post: March 6th, 2011, 02:12 PM
  2. P2563 code "Turbocharger Boost Control Position Sensor Performance"
    By Truckin Stuff in forum Duramax 06 LLY / 06+ LBZ & LMM
    Replies: 0
    Last Post: December 3rd, 2009, 01:11 PM
  3. Too much boost and Turbo Vane "TARGET" Position-LMM
    By killerbee in forum Duramax 06 LLY / 06+ LBZ & LMM
    Replies: 0
    Last Post: November 5th, 2009, 09:27 AM
  4. EFILive "Classic"/"Legacy"/"Historic"?
    By emarkay in forum FlashScan V2
    Replies: 6
    Last Post: November 2nd, 2008, 02:48 AM
  5. Do the 105 kpa columns on custon o.s for main and boost VE "HAVE" to match???
    By nitrorocket in forum General (Petrol, Gas, Ethanol)
    Replies: 0
    Last Post: July 20th, 2006, 04:30 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •