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Thread: PE Delay on VMax truck

  1. #1
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    PE Delay on VMax truck

    I've been tuning my buddy's truck for awhile and suddenly I have a PE Delay issue that I cant diagnose. If you look at the log its about 1.2 seconds after it reaches full throttle. It has never done this on previous tunes or logs. It is a speed density tune.

    Mods: Circle D 3000 stall, TFS As Cast Heads, BTR Stage 2 Truck cam, TBSS Intake, 1 7/8 Headers into off road Y and 4" single exhaust, 90mm TB with XLink adapter, 5" cold air intake

    Thanks
    John

  2. #2
    Tuning Addict 5FDP's Avatar
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    May 2012
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    I'm not sure if the two are related but that thing is idling/running really rich, when you come to a stop or are just cruising it's got a commanded AFR of 14.68 but your wideband is showing that it's running in the 11's.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
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    The wideband wasn't hooked up. Look at the idle fuel trims.

    Thanks for looking though

  4. #4
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    Actually I think I'm wrong. I pulled the front 02 sensor and put the wideband in that spot. That's why one bank is super rich