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  1. #1

    Default Oil consumption troubles?

    Just wondering if all the NBS 07-011 GMC's and chevys with the 5.3 are having the issues with using a lot of oil or just a few? A GM mechaninc friend told me there were many getting new pistons and rings and such because of the AFM and shutting down from 8 to 4 cylinders and not getting enough oil to the cylinders. I'm wondering if you program out the AFM to where the truck runs on all 8 cylinders if that would stop the problem from happening or not? I have an 07 NBS 5.3 with 43,000 miles and so far it runs great just hoping it doesn't start using oil like many have had issues with.
    Last edited by stumpman; 08-29-2011 at 06:02 PM.

  2. #2
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    Default

    There are threads here that mention it but I have not personally had any experience with that, so I do not know. But to answer your question about shutting off the AFM: Yes, you can. Some programmers allow you to select if you want to deactivate it. I know my Diablosprot Predator does and I believe the Diablo Trinity does as well.


    Mike (Denver, CO) - 2008 Sierra 1500 Z71 SLE 5.3L 4WD

    SUSPENSION: Rancho 4" Suspension Lift; Rancho RS9000XL Shocks; Rancho Skid Plates; Rancho MyRide Wireless Shock Controller;
    TIRES:
    BFG All Terrain KO 315/70/17
    DRIVE TRAIN: 4.56 Gears; Detroit TrueTrac Differential; True Cool 40k Transmission Cooler
    PERFORMANCE: DiableSport Predator Tuner; Custom Tuned by Diablew; Magnaflow Exhaust; AFE Cold Air Intake
    ELECTRONICS: Kenwood DNX6180 Touchscreen; Subthump box w/10" Kicker; Driver Information Center (DIC); Rear View Camera
    ACCESSORIES: Westin Brush/Grill Gaurd; Westin Nerf Bars; Truxedo Tonneau; 20% Tint; Tow Mirrors w/Heat & Signals

  3. #3

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    I ordered the diablo sport predator today should have it in a couple of days. How does yours run with it off? Did it hurt your MPG much at all?

  4. #4
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    I am currently getting about 14mpg city and 18mpg on the highway. I think that is pretty good mileage still given the mods that I have, especially the tire size and gearing. I had my tuner custom tuned by a member of this site and I'm not exactly sure of all the settings. I do that he turned off the AFM, but I am not sure of the true impact given all of the other variables.

    Congrats on your Predator! You'll find that there are ton of things you can do with it, including increasing mileage. And the nice thing is if/when you change tire size, need to get and/or reset codes, increase performance (i.e. towing), etc, you'll find that your Predator will come in handy. There are a ton of threads here on its functions, so when you get a chance, you may want to read up on it and see what others have done with it.


    Mike (Denver, CO) - 2008 Sierra 1500 Z71 SLE 5.3L 4WD

    SUSPENSION: Rancho 4" Suspension Lift; Rancho RS9000XL Shocks; Rancho Skid Plates; Rancho MyRide Wireless Shock Controller;
    TIRES:
    BFG All Terrain KO 315/70/17
    DRIVE TRAIN: 4.56 Gears; Detroit TrueTrac Differential; True Cool 40k Transmission Cooler
    PERFORMANCE: DiableSport Predator Tuner; Custom Tuned by Diablew; Magnaflow Exhaust; AFE Cold Air Intake
    ELECTRONICS: Kenwood DNX6180 Touchscreen; Subthump box w/10" Kicker; Driver Information Center (DIC); Rear View Camera
    ACCESSORIES: Westin Brush/Grill Gaurd; Westin Nerf Bars; Truxedo Tonneau; 20% Tint; Tow Mirrors w/Heat & Signals

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