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  1. #1
    Sr. Apprentice
    Join Date
    Feb 2009
    Location
    Northwest Wisconsin
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    45

    Default Installed Exhaust and Intake, what next for better mpg?

    Well i've installed a cat-back exhaust and an aftermarket intake, i'm wondering what I can do next to increase my mpg/performance. Any opinions would be great, thanks!
    04' Silverado LT 5.3L w/ S & B intake, Banks Monster Exhaust Cat-back 3" to 5" Tip

  2. #2

    Default

    I would say go for a programmer or a custom tune. Lots of info about both on here, so do some searching around.
    Matt
    Hallsville, TX

    2005 Silverado 1500 LS Crew Cab 5.3L 2WD
    K&N FIPK II
    Magnaflow Exhaust
    Hypertech Max Energy Programmer
    Suspension Leveling Kit
    Putco Element Window Visors
    Carriage Works Billet Grille
    TruXedo TruXport Tonneau Cover


  3. #3
    Master Mechanic CarpenterGuy's Avatar
    Join Date
    Jul 2008
    Location
    Leeds, Alabama
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    994

    Default

    i would recomend a programmer cause you can swap from fuel efficiency mode to tow/haul mode to performance mode. if you dont want that, go with either high flow cats, headers, mass air flow sensor, or larger throttle body
    2006 Silverado Z71 - 97,000 - totaled, RIP
    2006 Silverado Z71 - 122,000 (K&N 77 Series CAI, PowerAid TBS, Magnaflow dual rear exit, 33x12.50 Mickey Thompson MTZ, Tuff Country Torsion Keys, Tuff Country Add-A-Leafs)
    1966 C10 swb stepside (Gen I 350, Turbo 400 trans, dual cyl power brakes, front discs)
    I'll keep my money, guns, and freedom. You keep the Change.

  4. #4
    Legend cascott325's Avatar
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    Lawrenceburg, Kentucky
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    1,709

    Default

    programmer. really do some shopping around for them. definately try to find a phone number so you can call a rep. i called a rep at granatelli and he quoted me $286. his name was alex
    2000 silverado with a 5.3l v8, shorty headers, upgraded plugs, 10 mil wires, magnaflow high flow cats, flowmaster 80 series muffler(2 in 2 out) w/ 18 inch stainless silverline tips. i have a k&n CIA. its a 4x4 z71 offroad package. Ls model.
    extended cab 160k miles, truxedo low profile bed cover, diablo sport predator tuner.
    reman tranny @ 130k miles
    Chris

  5. #5

    Default

    I think doing everything mechanical like headers, then throttlebody spacer, high flow catalytic converters, change the fluids and then get a tuner so that you can get tuned with all your mechanical parts on it. Just my thought.
    www.youtube.com/ippielb
    2002 Chevrolet Silverado 1500 z71 1985 Chevrolet Silverado k10 2006 Chevrolet Silverado 2500hd 6.6l LLY Duramax
    6.5" BDS Suspension Lift Edelbrock Carb & Polished Intake Manifold & Valve Covers NAPC Race Transmission & NAPC Built Transfer Case
    EFI Live Comp Cam and Valvetrain Snow Performance Methanol Injection
    35" Toyo Open Country Mud Terrain on 18" Ion Alloy 179's Headman Long Tube Headers and True Dual Exhaust FASS 150gph Titanium Series Pump
    AirAid Cold Air Intake with K&N Dry Filter & AirAid PowerAid Throttle Body Spacer 2" Suspension Lift 33x12.50r15 Tires EFI Live & AFE Stage 2 Intake
    Pacesetter Long Tube Headers with Cats Gone True Dual Exhaust FlowPro 3.73 Gears Yukon Grizzly Locker with Mag-Hytec Cover & Traction Bars
    NGK Iridium Tips & MSD Ignition Plug Wires Baja Spare Tire Holder 33x13.5 Hankook rt03 18" XD Rims
    Innovate LC-1 Wideband o2 Sensor x2 HID's all around LED taillights and 3rd brake light
    BDS Dual Steering Stabilizers Pioneer Double-DIN Touchscreen Navigation with Two 10" Subs under rear seat
    Electric Fan Autometer Pressure, Boost, and Pyro Gauges
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  6. #6
    Sr. Apprentice
    Join Date
    Feb 2009
    Location
    Northwest Wisconsin
    Posts
    45

    Default

    any recommendations on the high flow cat??
    04' Silverado LT 5.3L w/ S & B intake, Banks Monster Exhaust Cat-back 3" to 5" Tip

  7. #7

    Default

    Quote Originally Posted by ippielb View Post
    I think doing everything mechanical like headers, then throttlebody spacer, high flow catalytic converters, change the fluids and then get a tuner so that you can get tuned with all your mechanical parts on it. Just my thought.

    I agree with him...this is basically what I am doing...building it up then get the custom tune to tie it all together
    www.myspace.com/teamimageracing
    www.myspace.com/brotherspolish

    2002 Silverado
    5.3L
    Corvette Servo
    Spectre Air Intake
    MSD 8.5mm Super Conductor Wires
    AC Delco Iridium Plugs
    Flowmaster 40 Series
    Alpine Head Unit
    Next Mods
    2" Lowering Shackles
    Loud Mouth Grill
    :gasp:

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