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Thread: Help with Rich AFR between 4300rpm and 5400rpm (Video inside)

  1. #1
    Tuner in Training c6dude's Avatar
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    Help with Rich AFR between 4300rpm and 5400rpm (Video inside)

    I was Dyno tuning my car with my HP tuners yesterday and cannot get rid of the rich AFR starting at 4300rpm and finally stabilising at 5400rpm .That is where my MAF maxes out and PE table takes over fueling. Is there a way to make a smoother transition ?
    Eventually We were able to get 720 RWHP but the rich condition in that RPM range is costing me about 60 RWHP.

    Does anybody know how to tune around this ? He wanted to use his LS2 Edit but I did not want my computer locked out so I stuck with my own HP Tuners so I can tweak it myself. The tune is for my 2006 C6 .
    Please Help !!

    Here's a couple of videos of my car on the dyno .The first one has a good shot of the screen at the end with the table showing my rich AFR problem.Hope the links work: Thanks Guys

    http://video.google.com/videoplay?do...38549549&hl=en

    http://video.google.com/videoplay?do...53943243&hl=en

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  3. #3
    Tuning Addict WS6FirebirdTA00's Avatar
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    videos are worthless, post the tune. You should beable to adjust with the PE table, I had a vette I did today that maxed out at about 5600 on an 85mm MAF
    Sulski Performance Tuning
    2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
    2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB