Page 1 of 2 12 LastLast
Results 1 to 20 of 21

drilling a hole in the Y pipe before the muffler?

This is a discussion on drilling a hole in the Y pipe before the muffler? within the External Engine forums, part of the LSx Technical Help Section category; i was just wondering about it b/c one of my friends has an old Toyota truck that he did that ...

  1. #1
    Junior Member thiscatiskool's Avatar
    Join Date
    May 2008
    Location
    Rocky Mount, NC
    Age
    29
    Posts
    80

    Silver
    2002 Trans Am

    drilling a hole in the Y pipe before the muffler?

    i was just wondering about it b/c one of my friends has an old Toyota truck that he did that too and it sounds pretty mean. on a car with stock exhaust of just with a cat-back, how would it change the sound, and what about the emissions? would you have to plug the hole to pass emissions?

  2. #2
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Its called a cutout....




  3. #3
    James Bond Spikito's Avatar
    Join Date
    Aug 2007
    Location
    Texas
    Age
    30
    Posts
    4,546

    2001 3.8 Black - sold
    2000 SS Black M6

    ^^^ouch

  4. #4
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by Spikito View Post
    ^^^ouch
    lol MAN if I wouldnt have known about cutouts 4 or 5 years ago and how easy they were to install it would have saved me a bunch of cash. My first purchased car was an 98ish eclipse project... dont feel bad lol.


    Cutouts are 30-40 bucks for the manuals ones like mine. They are cappable for the street and install costs from 10-25 bucks at any muffler shop.

    I run mine open all the time, it will teach you to drive more... conservatively in town


  5. #5
    hanging around... LS1Jason's Avatar
    Join Date
    Mar 2009
    Location
    Henderson, Tx
    Age
    34
    Posts
    1,674
    '99 -- Z/28 -- Pewter

    a drilled hole doesn't make much sense. Go with what Josh said. Most with cutouts only have 50-75 bucks rap'd up in doing them. For plugging it, the cutout will have a block off plate you can bolt up to it and seal it off.

  6. #6
    hanging around... LS1Jason's Avatar
    Join Date
    Mar 2009
    Location
    Henderson, Tx
    Age
    34
    Posts
    1,674
    '99 -- Z/28 -- Pewter

    Quote Originally Posted by JoshieDoom View Post

    I run mine open all the time, it will teach you to drive more... conservatively in town
    Agreed. My exhaust is cut after the exhaust manifolds currently (previous owners doing). Can't get over about 2500 RPM without anyone remotely close by knowing exactly where i'm at. Kills being able to play around in town.

  7. #7
    Junior Member thiscatiskool's Avatar
    Join Date
    May 2008
    Location
    Rocky Mount, NC
    Age
    29
    Posts
    80

    Silver
    2002 Trans Am

    yea i know what a cut out is, but my states dont allow cut outs in the visual inspections, i wasnt gonna do it i just wondering what i 1" drill bit would do to it.

  8. #8
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by thiscatiskool View Post
    yea i know what a cut out is, but my states dont allow cut outs in the visual inspections, i wasnt gonna do it i just wondering what i 1" drill bit would do to it.
    What is not legal about a CAPPED cutout?

  9. #9
    Junior Member thiscatiskool's Avatar
    Join Date
    May 2008
    Location
    Rocky Mount, NC
    Age
    29
    Posts
    80

    Silver
    2002 Trans Am

    i read it in the NC emissions stuff that any kind of cut out is prohibited

  10. #10
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by thiscatiskool View Post
    i read it in the NC emissions stuff that any kind of cut out is prohibited
    Same with every state. Go talk to the place and see if a CAPPED cutout is legal.
    A capped cutout.. isnt a cutout.. lol

  11. #11
    Junior Member thiscatiskool's Avatar
    Join Date
    May 2008
    Location
    Rocky Mount, NC
    Age
    29
    Posts
    80

    Silver
    2002 Trans Am

    hmmm ok, i can do that, thanks

  12. #12
    Bone it like you own it FORD RECOVERY EXPERT's Avatar
    Join Date
    Sep 2005
    Location
    TEXAS... U mad?
    Posts
    6,158

    Black / Stryker Blue
    2K WS.6/ 2K9 G8GT

    Warlock mufflers FTW

  13. #13
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by FORD RECOVERY EXPERT View Post
    Warlock mufflers FTW
    Click for full size
    Or this!

  14. #14
    Bone it like you own it FORD RECOVERY EXPERT's Avatar
    Join Date
    Sep 2005
    Location
    TEXAS... U mad?
    Posts
    6,158

    Black / Stryker Blue
    2K WS.6/ 2K9 G8GT

    Def more expensive, but less obvious to inspections
    tell em it is a "clean out port"

  15. #15
    hanging around... LS1Jason's Avatar
    Join Date
    Mar 2009
    Location
    Henderson, Tx
    Age
    34
    Posts
    1,674
    '99 -- Z/28 -- Pewter

    Quote Originally Posted by thiscatiskool View Post
    just wondering what i 1" drill bit would do to it.
    Make it sound like it has a horrible exhaust leak?

  16. #16
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by LS1Jason View Post
    Make it sound like it has a horrible exhaust leak?

  17. #17
    Didn't this site have something similar listed under the "free mods" section? If I remember right, they had a how-to for it. It basically consisted of drilling a 1" hole in the intermediate pipe just before the muffler, and another hole on the passenger side tailpipe in close proximity. Then you would put a metal plumbing tube in between the two and weld or braze it in place

  18. #18
    hanging around... LS1Jason's Avatar
    Join Date
    Mar 2009
    Location
    Henderson, Tx
    Age
    34
    Posts
    1,674
    '99 -- Z/28 -- Pewter

    But not everyone is going to have the equipment to weld or braze it themselves. And even taking to to someone to have it done, they're still liable to charge you 10-15 bucks just for the trouble of doing it. Which, is roughly what people are paying to have the cutouts put in.

    If someone is on that strict of a budget, maybe. otherwise for another 30ish bucks you might as well by the manual cutout. Just my opinion.

  19. #19
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,746

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by Marc 85Z28 View Post
    Didn't this site have something similar listed under the "free mods" section? If I remember right, they had a how-to for it. It basically consisted of drilling a 1" hole in the intermediate pipe just before the muffler, and another hole on the passenger side tailpipe in close proximity. Then you would put a metal plumbing tube in between the two and weld or braze it in place
    DEFINATELY not on of the free mods.. a hole that small is called an exhaust leak lol

  20. #20
    Visualize°Design°Create SSwt00SS's Avatar
    Join Date
    Dec 2005
    Location
    Dallas, TX
    Posts
    9,287

    '12 Silver SS 1SS
    '00 Black SS #8617

    Quote Originally Posted by thiscatiskool View Post
    yea i know what a cut out is, but my states dont allow cut outs in the visual inspections, i wasnt gonna do it i just wondering what i 1" drill bit would do to it.
    Quote Originally Posted by thiscatiskool View Post
    i read it in the NC emissions stuff that any kind of cut out is prohibited
    so you think that a 1" hole is...?

    just leave the y-pipe alone and get a better cat-back...UGH!!!
    2000 SS - The Wicked Witch: °°Cammed 'n Slammed°° 458rwhp/410rwtq
    Quote Originally Posted by Bowtie_girl30
    I was hoping to just hump her up the exhaust cause she is so damn sexy....
    "Never argue with an idiot. They drag you down to their level, then beat you with experience."

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Help: what to put an x pipe and new muffler any ideas
    By ws6shine in forum Firebird / WS6
    Replies: 10
    Last Post: 10-16-2014, 05:41 AM
  2. Muffler behind Y pipe?
    By kiddynamite in forum Firebird / WS6
    Replies: 5
    Last Post: 03-12-2010, 04:22 PM
  3. Muffler Delete Pipe
    By 01RaptorTA in forum Parts For Sale / Trade
    Replies: 1
    Last Post: 06-07-2009, 08:35 AM
  4. Replies: 6
    Last Post: 02-08-2008, 07:47 AM
  5. Replies: 6
    Last Post: 08-05-2006, 12:56 PM

Bookmarks

Posting Permissions

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