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  1. #11


    I'm running the Banks CAI, you can see on my photo album and a Magnaflow exhaust, not too loud even when you get on it.

  2. #12


    i have a spectre cold air ($140 at advance) and flowmaster exhaust.... the CAI added some growl when i got on it, but with the flowmaster on i never hear the CAI anymore.

    i picked up .5 mpg or so, then with the hypertech i got a little more. itll vary based on the vehical and how you drive.

    best thing i can tell ya is do the research and get what you like, not what someone else tells you to. especially someone like me, who just pretends to know what hes talking about.


    2011 GMC Sierra SLE 5.3 Z71 4X4 Stealth Gray Metallic / 2004 Chevy Impala LS 3.8 Cappuccino

    Tow mirrors - Diablew Tuned - Flowmaster Regular 40 - Ready Lift 2.5' lift - BFG LT A/T K/Os - Carr Light Wing - TruckLite LED lights - Optima Red Top - 50% Front Window Tint - Line-X bedliner - Airaid MIT - Tekonsha P2 - ARS Billet Grill - Fia custom fit seat covers

  3. #13
    Sr. Apprentice OHChevy03's Avatar
    Join Date
    Oct 2010
    Columbus, Ohio


    Right now I'm leaning towards doing a 1 in, 2 out exhaust, not a true dual exhaust system along with replacing the stock intake tube with a larger tube. Am I looking at getting an increase in MPGs if I am able to keep my foot off the pedal?
    03 Silverado 5.3L 2WD Ext Cab LS, Summit White
    Cooper Discoverer S/T 265/75-16s
    Back Country Step Bars
    Daystar Leveling Kit

  4. #14


    ^^^^ pretty much thats the hardest part with either mod...

    when you put on the intake, or exhaust, or both. It's only natural your going to want to hear the truck roar, and you wont notice yourself pushing your put alittle more to the floor. If and when you can control that urge, thats when your going to notice a difference in you trips to the gas station...

    If your good, id say about 1 or 2 tanks and you'll be able to control yourself from dropping the hammer all the time...
    * 2008 Silverado 5.3L Z71 4x4 *
    15% Tint
    KMC XD Series Addict 17x9's
    Wrangler AT-S 265/70/17's
    K&N Intake - 63 Series
    Flowmaster Super 10 SI/DO Exhaust

  5. #15


    Yeah i def. agree with what CALDWELL said but i had straight's and they guzzled gas especially since they were true dual setup with 2.5 inch pipe. I installed a Flowmaster super 40 series dual in/dual out which is still true dual but the gas mileage is better along with HP and Torque and back pressure my truck use to have lag no doesn't at all and since i put a drop in K&N air filter it's helped also ha.I know this week when i get my x pipe installed i will be on the gas even more to see how much it helped and how it will perform. I know i got allot more power now cause now i can mash on the gas at a complete stop and leave black tire mark's on the pavement and i have 33 13.50's so overall i'm happy but will be happier once i installed my Pacesetter Quik Trip Long Tube header's next week also!

    2008 Chevy Silverado Ext. Cab Lt Z71 5.3 V8
    7.5 Inch Rough Country Suspension Lift
    RBP Replica Grille Black w Chrome Rivets
    Recon Smoked Cab Roof Lights
    N-Fab Powdercoated Gloss black Cab Length Nerf Steps
    5% Tint over 20% all the way around / 5% Eyebrow Strip
    AVS Smoked Window Visors
    Z71 Stickers Black & Metallic Silver
    Tow Mirrors / Smoked Turn Signals
    XM Satellite Radio Fin / Color Matched
    Interior Plastic Pieces / Color Matched
    Power Acoustic Tweeters
    Painted Bowties / Color Matched
    Painted Door Handles / Color Matched
    Smittybilt Bull Bar / Color Matched
    Custom Rolled Edge Exhaust Tips / Color Matched
    Custom 2.5 Inch Cat Back True Dual Exhaust
    Flowmaster Super 40 Series Dual in / Dual out
    Magnaflow Tru-X Pipe
    K&N Air Filter
    18x9 Rockstars Machined Black
    Center Caps / Color Matched
    33.13.50 Nitto Terra Grapplers
    New Front Wheel Well Liners
    Eagle Eye Black L.E.D. Tailights
    Eagle Eye Black L.E.D. Third Brake Light / Smoked
    Eagle Eye Black L.E.D. Halo Projector Headlights
    Notto HID Kit 10,000k Low beams
    Recon L.E.D. Light Bar
    Buschwacker OE Style Tailgate Cap
    AMI Gloss Black Antenna
    Debadged Chrome Lettering
    Door Molding Removed

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