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Thread: Newbie question

  1. #1

    Default Newbie question

    I have now almost 2,000 kms on my new truck (1,300 kms - solo; 700 kms - towing) and lately, I've noticed that the inside of my tailpipes are BLACK - It's almost like a black powder coating the inside of the tailpipes. I've never seen this before - so I'm wondering if anybody else has experienced this and if so WHAT'S CAUSING IT
    Richard (Winnipeg, MB Canada) - 2012 GMC Sierra 1500 SLE 4x2 (Carbon Black Metallic) -Z71 - 5.3 L V8 - 3.42's
    Leer 100R truck cap; Chrome clad aluminum wheels (18"); custom cat-back dual side exits (4" diameter Magnaflow SS tips) exhaust system with Magnaflow muffler (18"); Cloud Rider stainless steel grill overlay

  2. #2

    Default

    You've never seen black on the inside of exhaust before? This confuses me. Especially considering your exhaust is no longer stock, this should be expected. Even more-so when under load/lead foot driving.

    "If you're not living life on the edge, You're taking up too much space"

    "Truck Norris"
    - 2008 TX Edition Silverado
    - McGaughy's 4/5 Drop Kit
    - Apline Type R 10s & Amp
    - Pioneer 6 Disc Touchscreen Deck
    - Nightmare Breed Motorsports custom tune
    - Custom 3" dual exhaust through x-pipe dumped at axle
    - Airaid CAI
    - Badges and molding removed, roll pan, Truxedo roll-up cover (compliments of GMTC!), 3pc billet grille, factory fogs upgrade
    "Kristine" - 1991 Nissan 240sx
    - Cut to pieces, LS build pending

  3. #3
    Master Mechanic
    KyleZ71's Avatar
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    Default

    Your engine is running a little rich. No real problem but not getting best efficiency.
    Objects in mirror are losing

    2003 Chevy Silverado Z71, 5.3L, K&N 57 series, 2.5'' Flowmaster Super 10 series dual exhaust , Corvette Servo, McNew Automotive Dyno tune, SS gauge cluster, Extang Trifecta Tonneau, Pacesetter shorty headers, Goodmark cowl hood, Sony Xplod speakers, Kenwood DDX-470 exhaust tips, 16" Ultra Badlands polished wheels, Pirelli Scorpion ATR .

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