Results 1 to 15 of 15

Thread: twin 2 1/2 inch vs 3 inch????

  1. #1
    Ride
    vt ss 5.7L

    Join Date
    Nov 2010
    Location
    Bathurst
    Posts
    31

    Default twin 2 1/2 inch vs 3 inch????

    hey, ive been trying to search for the better exhaust but cant find it for the gen 3's. im up for a new exhaust as mine is full of holes now and im just wondering wich is better out the 3 inch or 2 1/2??? my car is jut stock. any opinions or help would be awsome,
    thanks

  2. #2
    Ride
    VT SS LS1/T56

    Join Date
    Nov 2010
    Location
    Melbourne
    Posts
    30

    Default

    Twin 2 1/2 for a stock motor. Xforce and difilipo make great systems.


    CHIRP THIRD CAUSE U CAN

  3. #3
    WogBoyz's Avatar
    WogBoyz is offline Cammed & Eventualy Blown!
    Ride
    08 VE SSV Ute

    Join Date
    Feb 2009
    Location
    Cairns, Qld
    Posts
    2,619

    Default

    id go the 2.5, if u want the best sound go for the kpm system, however you do pay for it, if u just want some noise go the xforce

    Now Saving for a Harrop HTV2300 Supercharger kit!
    Quote Originally Posted by skyracer View Post
    On new years eve I got stopped by a pack of about 5 people forming a road block. All of them naked. They proceeded to turkey slap my car as I rolled past...

  4. #4
    Ride
    vt ss 5.7L

    Join Date
    Nov 2010
    Location
    Bathurst
    Posts
    31

    Default

    ahhk thanks guys, im just after something cheap but good as im short on cash, i got quoted $800 for a twin 2 1/2 lukey catback does this sound bout right?

  5. #5
    keeny's Avatar
    keeny is offline keeny
    Ride
    vz calais alloytec 190

    Join Date
    Dec 2008
    Location
    Maitland, NSW
    Posts
    104

    Default

    mmm. i got a 2.25 inch twin xforce fitted on my alloytec (same setup as gen 3) with chrome tips for $350 but they are a cheaper exhaust.

  6. #6
    soop is offline Banned
    Ride
    2003 SS Commodore Series II

    Join Date
    Nov 2008
    Location
    Smithton, Tasmania.
    Posts
    3,851

    Default

    Xforce make crap systems.
    They sound horrible and flow like a dog turn down the sink.

    The "X pipe" in them is a dogs breakfast, I'll show you why on wednesday too.

  7. #7
    Ride
    carless for now

    Join Date
    Feb 2007
    Location
    perth,Western Australia
    Posts
    901

    Default

    if you plan on getting the full exhaust and getting a cam and such id go the twin 3 sounds a lot better than a twin 2.5 too

  8. #8
    Ride
    VT SS S2 A4

    Join Date
    Aug 2005
    Posts
    1,259

    Default

    Quote Originally Posted by soop View Post
    Xforce make crap systems.
    They sound horrible and flow like a dog turn down the sink.

    The "X pipe" in them is a dogs breakfast, I'll show you why on wednesday too.
    I have to agree sound wise, they are not the greatest. I have an Xforce on mine and ended up getting a new rear muffler made up for it to stop the annoying bark it had.

  9. #9
    Ride
    vt ss 5.7L

    Join Date
    Nov 2010
    Location
    Bathurst
    Posts
    31

    Default

    yeah i found a twin 2 1/2 inch on ebay for 380 so ill give it a go, thanks for the help

  10. #10
    soop is offline Banned
    Ride
    2003 SS Commodore Series II

    Join Date
    Nov 2008
    Location
    Smithton, Tasmania.
    Posts
    3,851

    Default

    Quote Originally Posted by Vt_vic View Post
    if you plan on getting the full exhaust and getting a cam and such id go the twin 3 sounds a lot better than a twin 2.5 too
    Frankly I don't think a twin 3" is warranted until you start fiddling with heads or a really big cam.
    As for sound, that more depends on the mufflers then the pipe diameter.

  11. #11
    Ride
    carless for now

    Join Date
    Feb 2007
    Location
    perth,Western Australia
    Posts
    901

    Default

    imo the twin 3 is a tiny bit louder and much more deeper and meatier i have a twin 2.5 manta now but had a manta, x force and difilippo twin 3 that i borrowed they have bit more drone but sound much better and performance wise i didnt notice much difference but my extractors and cats are all 3 inch

  12. #12
    pjdm1980's Avatar
    pjdm1980 is offline The Holden Hunter!
    Ride
    E1 GTS BUILD NO# 007, VP Calais Interntional.

    Join Date
    Feb 2009
    Location
    Geelong, Victoria
    Posts
    1,943

    Default

    Quote Originally Posted by soop View Post
    Xforce make crap systems.
    They sound horrible and flow like a dog turn down the sink.

    The "X pipe" in them is a dogs breakfast, I'll show you why on wednesday too.
    My system look like it flows pretty well and it sounds sweet-

    My New Car E Series GTS Build Number 007
    PERFORMANCE MODS- JTG Liquid injection, Under driven pulley, Pacemaker extractors, 3" X-force system, Cold air intake, MAF Less tune 267.9 RWKW'S
    http://forums.justcommodores.com.au/...ber-007-a.html
    Yes I know, if you get anymore manly you are in danger of making yourself pregnant!


  13. #13
    soop is offline Banned
    Ride
    2003 SS Commodore Series II

    Join Date
    Nov 2008
    Location
    Smithton, Tasmania.
    Posts
    3,851

    Default

    Okay, I should Have stipulated. The VT-VZ exhausts systems are shite.

    Never seen the VE system up close to comment. Sound quality of that camera is a little sad so can't really tell. But I sounds like my VY used too. Which I never liked.

  14. #14
    Claudy's Avatar
    Claudy is offline French Com
    Ride
    Manual Gen3 VT SS + V6 VT manual turbo

    Join Date
    May 2006
    Location
    Perth, Two Rocks
    Posts
    410

    Default

    I got 4-1 CAPA extractors, high flow cats and twin 3" Xforce exhaust on my manual VT SS and I love the sound of mine ay, wouldn't ever change it
    Gen3 6spd Manual VT SS
    VT V6 Manual turbo

  15. #15
    Not_An_Abba_Fan's Avatar
    Not_An_Abba_Fan is offline Exhaust Guru
    Ride
    HSV Senator VTII

    Join Date
    Aug 2006
    Location
    Bunbury, WA
    Posts
    9,104

    Default

    Simple answer, twin 3" if you want it louder and are just after sound, twin 2 1/2" if you want better performance as well as sound. I am of the opinion to steer clear of X force as well, it is restrictive and sounds like crap.
    Visit my Facebook page



    Quote Originally Posted by DannyboyDS View Post
    I burnt my hand in a nasty way once using method one but thats because i'm a twat.


Similar Threads

  1. [SA] F.S. x1 Redback hotdog muffler and x1 Supercat 4 inch rear resonator (both 2.5 inch)
    By GTP 85 in forum Parts And Other Items For Sale
    Replies: 1
    Last Post: 23-05-2010, 06:31 PM
  2. [VIC] Swap my vy 19 inch sigs for vx or vz 17 inch ss wheels plus cash adjustment
    By lumina01 in forum Swap / Wanted to Buy / Trade
    Replies: 14
    Last Post: 08-02-2009, 10:46 AM
  3. FS: VT-VY LS1 twin 2.5 inch X_Force Catback
    By Commyfan in forum Parts And Other Items For Sale
    Replies: 3
    Last Post: 18-11-2008, 06:07 PM
  4. switch from 3 inch to a twin system?
    By stocky in forum V8 Development and Modification
    Replies: 12
    Last Post: 05-09-2008, 10:01 AM
  5. From standard exhaust to twin 2 inch...
    By Hairy Eater in forum VT - VX Holden Commodore (1997 - 2002)
    Replies: 3
    Last Post: 19-12-2005, 09:53 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72