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Thread: LB7 performance

  1. #1
    Join Date
    Apr 2014
    Location
    San Diego
    Posts
    1

    Default LB7 performance

    I'm interested in changing to an 4 or 5 inch exhaust system to improve performance on my LB7 duramax. The stock pipe diameter is 3.5 inches. In order to get the best result, where must I tie in? At the turbo, the downpipe, or with a cat-back system?

  2. #2
    Join Date
    Dec 2000
    Location
    Hawaii/Arizona
    Posts
    251

    Default

    Sderuntz,
    Look at the DP Monthly articles that Jim writes. About half way down the list is an article about Magna Flow exhaust systems. It will give you some real world info about exhaust systems. Also do a DP search on the subject.
    Good luck
    John
    *2006 Chevy, 3500, 4X4, DRW, (LBZ) D/A, CC, LT, 252K Miles, 19.5" Wheels, Mag Hytec Transmission Pan and Differential Cover, SS Grill Guard, Racor 2 micron aux fuel filter, 100 Gallon Aux Fuel Tank, using Edge Evolution, Predator Diablosport, Kennedy ECM tune, Fitch Fuel Catalyst.

    *2006 Four Winds, Dutchman, 36', RV, D/A, 5500 Kodiak.
    *1993 Harley Davidson, Turbo charged, Springer Softail.
    *2007 Pontiac Solstice.
    *2005 Jeep, Liberty, CRD (diesel).
    *Full-timing in USA, see America first.

    BUY AMERICAN or CANADIAN, NOTHING from CHINA .

  3. #3
    Join Date
    Apr 2011
    Location
    klamath Falls, Oregon
    Posts
    131

    Default

    You have to sign in again? I don't remember my password to get into these articles. I'm just saying, what's an old man to do?
    Eddie
    ---------
    2007 GMC Sierra Classic 2500HD CC/LB (LBZ)
    211,000 miles / DVD player
    Kennedy Diesel Tuned Computer
    Manually extended towing mirrors
    Winter Grill Cover/screen
    Tough Country front bumper
    12,000# Warn Winch
    KC Fog Lights
    KC 130w Driving Lights
    Bradford Built Flatbed
    Firestone Ride-Rite Air Bags
    More things covered by crochet than I'll admit.

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