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Thread: Which Mod Next?

  1. #1

    Default Which Mod Next?

    I just added a Airraid intake and Superchips Flashpaq tuner for my truck. It was suggested that I add a throttle body spacer....A shop here can add a Flowmaster Muffler keeping the stock pipe for $120.00.

    Has anyone replaced the muffler only? Does the stock pipe need to be changed? Is the throttle body spacer worth it for a 4.8 V8?


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  2. #2

    Default

    TB spacers are worthless and a waste of money that can be used towards worthwhile mods..

    U really wont gain much of anything by just replacing the muffler (just sound)

    some gains are seen by changing out to a better muffler but gains are also seen from Nice mandrel bent piping (unlike most factory stuff)

    OLDER:lifted 04 sierra
    OLD:2004 red m6 gto..bolt on's and cammed..
    RIP
    09 white hot G8GT premium/sport onyx/red
    1/4 13.08@106.36 60FT 1.999
    330hp 347tq

  3. #3

    Default

    ya i just put cat back flowmaster 44's and i lost a tiny bit off the line and gained on mid and top it seems mandrel bends are important tho r exhaust is only as good as its smallest opening

  4. #4

    Default

    ya i agree with the other guys, TB spacers are basically worthless
    and adding just a muffler wont do much but give you a better sound.
    if you do plan on adding only a muffler though, i would suggest buying one online and then bringing it to your shop to get installed, that way you'll save some money.
    Jeremy - California

    07 GMC Sierra (New Body)
    4.8 V8
    Straight piped exhaust
    Shorty Headers
    Beltech 5/7 drop
    AiRaid intake and Throttle Body
    SuperChips tuner
    and lots more to come!!


  5. #5

    Default

    Tb are really not worth the small gain.

    An exaust will have less constriction than your factory muffler and will help a littel, and sound good too, I agree w above the bigger the pipe the better,
    True dual exaust will be the way to go from a perfomance standpoint, it gives the most gains (which are nothing to brag about)

    I would reccomed a forced air incudtion for your new air intake its a cheap "mod"
    Ryan

    2002 Jeep Wrangler Sport 4x4 (the Yellow Jacket)
    4inch suspension 3inch body
    Straight 6 (383 Stroker within a year)
    36inch SuperSwamper TSL.
    105,000
    Detroit Loccers
    Daily Driver Weekend Wheeler
    much more...

    2004 Sierra crew cab, 2wd, 5.3 V8
    2inch Daystar Leveling kit
    single dumped Flowmaster 40 sieries exaust(removed)
    Mb Blitz Chrome wheels
    Leer Bed Cover(for sale)
    50k miles
    :glasses:




  6. #6

    Default

    Quote Originally Posted by Slammed07Sierra View Post
    ya i agree with the other guys, TB spacers are basically worthless
    and adding just a muffler wont do much but give you a better sound.
    if you do plan on adding only a muffler though, i would suggest buying one online and then bringing it to your shop to get installed, that way you'll save some money.
    Thats bull****. TB Spacers are definitely worth the money! I put one on my 5.3 and you can definitely notice the difference off the line! It also makes a whistling noise at around 2,000 rpms which sounds nice. They are definitely worth the money!
    99 GMC Sierra 2500
    Chipped 5.3L with Airaid Intake/Throttle Body Spacer
    Dual Cat-Back Flowmasters
    18'' MKW M28's on 32" Fuzion XTI tires
    8000K HID Kit, Cleared corners all around
    2 10" alpine subs with alpine amp

  7. #7
    Jr. Engineer
    Join Date
    Jan 2009
    Location
    Rochester, MN
    Posts
    231

    Default

    The only thing a throttle body spacer is good for is if you have a body lift and your cold air intake won't fit right anymore. I had one on my 97 Suburban and didn't notice anything other than a little bit different sound and a little less money in my wallet. It came in handy though when after my body lift I added my K&N intake.

  8. #8

    Default

    Alright well I noticed the results anyways even though it is a decent amount of cash to put out. It's not so much the performance gain you get even but it allows your engine to idle higher and be faster off the start. I like mine anyways!

  9. #9

    Default

    Well, I don't have any experience with throttle body spacers, but I do have a muffler replacement. I did have a noticeable difference in performance. Nothing extreme, but noticeable. I agree that a cat-back system with mandrel bent pipes will give you an even better gain, but a muffler replacement does help.
    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


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