Page 1 of 2 12 LastLast
Results 1 to 20 of 22

exhaust dilemma, let me know what you think

This is a discussion on exhaust dilemma, let me know what you think within the External Engine forums, part of the LSx Technical Help Section category; ok so heres the deal. i have a 2000 ws6, with a gmmg catback and slp ypipe. last year i ...

  1. #1
    Millennium Falcon mpfranks's Avatar
    Join Date
    Sep 2007
    Location
    Akron, Oh
    Posts
    689

    Red
    2000 Trans Am WS.6

    exhaust dilemma, let me know what you think

    ok so heres the deal. i have a 2000 ws6, with a gmmg catback and slp ypipe. last year i bought the slp ypipe to replace my stock one without thinking long term for headers. however, now i bought qtp longtubes, but havent put them on yet.

    the problem is the collectors on the headers are 3", and the inlet and the outlet on the slp ypipe is 2.5". also, i know that the slp ypipe wont fit without being modified.

    is it gonna be a problem that i go from 3" collector, to a 2.5" ypipe, back to a 3" catback? will this cause power loss?

    am i better off to just shell out the extra $300 for the qtp ypipe? or will i be ok with cutting off the flanges on the slp and fitting it to the qtp headers?

    thanks for the input.

  2. #2
    Life in the Fast lane sunsetorangess's Avatar
    Join Date
    Aug 2005
    Location
    Bragg NC
    Posts
    2,835

    Met. Sunset Orange
    01 SS

    To save time and a headache i would go ahead and spend the extra cash to get the Qtp Y pipe.
    J
    2001 SS, Its not the car its the Driver that matters....

  3. #3
    Visualize°Design°Create SSwt00SS's Avatar
    Join Date
    Dec 2005
    Location
    Dallas, TX
    Posts
    9,287

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

    just get a 3" y-pipe, sell off the SLP y-pipe and get some $$$ back...

  4. #4
    Member side2000's Avatar
    Join Date
    Jun 2008
    Location
    md
    Posts
    861

    red
    2000 camaro ss

    you're flirtin with one hellofa mess there. yes, flow characteristics will be all outta wack with that bottleneck in the center of your exhaust, if you could even pull that off. buy a new one.

  5. #5
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    I agree,,,you are going to go through some headaches trying to match that up,,,and spend some money on fab work too. I'm willing to bet with fab work labor, flanges and extra tubing you would be close to buying that 3 inch Y-pipe anyway.

    I would make the plung and save the headache. You'll be happier in the long run.

  6. #6
    War Machine BIG GUNS's Avatar
    Join Date
    May 2007
    Location
    St. Louis MO.
    Age
    53
    Posts
    2,100

    Black
    00 Trans Am/Auto

    I wouldn't even deal with it. I would just get a 3" y pipe to match and be done with it.

    When I have enough, I'm going to get the LPP set up with the matching y pipe.

  7. #7
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    I agree with everyone else. Buy the 3" Y and sell the SLP to recoup some of your money. I can tell you from experience that by the time you fab it up you'll have the money in it to have bought the 3" Y. I run into this everytime I do exhaust work. I do it to try and save money and by the time it's all said and done I could've taken it somewhere and not had the headaches.

  8. #8
    Senior Member Too Fast's Avatar
    Join Date
    Nov 2006
    Location
    Indianapolis
    Age
    54
    Posts
    5,170

    Black
    2000 WS6 6spd Hooker LT

    Yup + however are above. Just get the matching 3" ORY and be done with it. Problem solved.

  9. #9
    Senior Member 01ws6er's Avatar
    Join Date
    Oct 2007
    Location
    The 717
    Age
    30
    Posts
    2,471

    Red
    2001 Trash Can

    Either buy ad new 3" ORY or have an exhaust shop fab one up for you.

  10. #10
    Millennium Falcon mpfranks's Avatar
    Join Date
    Sep 2007
    Location
    Akron, Oh
    Posts
    689

    Red
    2000 Trans Am WS.6

    well i guess ill add it to the wishlist.

    thanks for the input guys.

  11. #11
    Senior Member Too Fast's Avatar
    Join Date
    Nov 2006
    Location
    Indianapolis
    Age
    54
    Posts
    5,170

    Black
    2000 WS6 6spd Hooker LT


  12. #12
    Member
    Join Date
    May 2008
    Location
    delete me too
    Posts
    200
    just to go ahead and beat a dead horse here, i am in a similar situation where my cat back is a 2.5, and my y forward is a 3 i believe... I'm in the same boat w/everyone else, and i'd say it is better to go all one size

  13. #13
    LSX whore allbaugh_04's Avatar
    Join Date
    Mar 2007
    Location
    Omaha, NE
    Age
    32
    Posts
    5,895

    Pewter
    2000 Z28 Camaro

    Yea, everyone said it already, but i will share my opinion as well. You definetly don't want a smaller y-pipe in the middle of your exhaust.

    You don't necessarily have to buy the QTP ypipe either. The exhaust shop might have what you are looking for, or they can make you one....then sell the SLP one.

  14. #14
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
    Join Date
    Oct 2006
    Location
    doylestown, Pa
    Posts
    6,818

    SILVER
    2004 CTS-V

    Quote Originally Posted by mpfranks View Post
    ok so heres the deal. i have a 2000 ws6, with a gmmg catback and slp ypipe. last year i bought the slp ypipe to replace my stock one without thinking long term for headers. however, now i bought qtp longtubes, but havent put them on yet.

    the problem is the collectors on the headers are 3", and the inlet and the outlet on the slp ypipe is 2.5". also, i know that the slp ypipe wont fit without being modified.

    is it gonna be a problem that i go from 3" collector, to a 2.5" ypipe, back to a 3" catback? will this cause power loss?

    am i better off to just shell out the extra $300 for the qtp ypipe? or will i be ok with cutting off the flanges on the slp and fitting it to the qtp headers?

    thanks for the input.
    Get rid of the SLP Y-pipe and get the QTP/Flowmaster Y-pipe ONLY if you have access to a welder OR, get the Pacesetter Y-pipe for around $150, trim 2" off of the front of it and have it re-expanded then put it on and connect it to your GMMG.

  15. #15
    Millennium Falcon mpfranks's Avatar
    Join Date
    Sep 2007
    Location
    Akron, Oh
    Posts
    689

    Red
    2000 Trans Am WS.6

    Quote Originally Posted by 9t8z28 View Post
    Get rid of the SLP Y-pipe and get the QTP/Flowmaster Y-pipe ONLY if you have access to a welder OR, get the Pacesetter Y-pipe for around $150, trim 2" off of the front of it and have it re-expanded then put it on and connect it to your GMMG.
    is that what you did? how did it work out? why whould you need to cut off 2"?

    if there is any fab work involved that puts me right back in the same boat. id be better off just getting the qtp since its a direct fit.

  16. #16
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
    Join Date
    Oct 2006
    Location
    doylestown, Pa
    Posts
    6,818

    SILVER
    2004 CTS-V

    Quote Originally Posted by mpfranks View Post
    is that what you did? how did it work out? why whould you need to cut off 2"?

    if there is any fab work involved that puts me right back in the same boat. id be better off just getting the qtp since its a direct fit.
    Yes, I used the Pacesetter Y-pipe w/ my QTP longtubes. The Y is designed for there headers which are shorter.

    Like I said, you are going to need to weld and possible do some trimming on the QTP/Flowmaster Y-pipe to make it fit correct. It is much easier chopping off 2" off of each side of the Y and then having it re-expanded.

    Here it is installed.



    Last edited by 9t8z28; 12-28-2008 at 11:53 AM.

  17. #17
    Millennium Falcon mpfranks's Avatar
    Join Date
    Sep 2007
    Location
    Akron, Oh
    Posts
    689

    Red
    2000 Trans Am WS.6

    Quote Originally Posted by 9t8z28 View Post
    Yes, I used the Pacesetter Y-pipe w/ my QTP longtubes. The Y is designed for there headers which are shorter.

    Like I said, you are going to need to weld and possible do some trimming on the QTP/Flowmaster Y-pipe to make it fit correct. It is much easier chopping off 2" off of each side of the Y and then having it re-expanded.
    well i like that too cuz its $200 cheaper. well what about if i wanted to add cats to that? you think adding universal cats would cause anymore problems? i really dont want to run cats, but in ohio in my county we have e-check. and i cant apply for collector plates yet. if not, i might have to register it in another county.

    yeah that looks clean, that what i was worried about. i see you didnt use the clamps that come with the pacesetter.

    how do you like your qtp's? i cant wait to install mine
    Last edited by mpfranks; 12-28-2008 at 12:00 PM.

  18. #18
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
    Join Date
    Oct 2006
    Location
    doylestown, Pa
    Posts
    6,818

    SILVER
    2004 CTS-V

    Quote Originally Posted by mpfranks View Post
    well i like that too cuz its $200 cheaper. well what about if i wanted to add cats to that? you think adding universal cats would cause anymore problems? i really dont want to run cats, but in ohio in my county we have e-check. and i cant apply for collector plates yet. if not, i might have to register it in another county.
    Yes, you can add cats to it. The passenger side will be a little easier then the driverside.

  19. #19
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
    Join Date
    Oct 2006
    Location
    doylestown, Pa
    Posts
    6,818

    SILVER
    2004 CTS-V

    Quote Originally Posted by mpfranks View Post
    well i like that too cuz its $200 cheaper. well what about if i wanted to add cats to that? you think adding universal cats would cause anymore problems? i really dont want to run cats, but in ohio in my county we have e-check. and i cant apply for collector plates yet. if not, i might have to register it in another county.

    yeah that looks clean, that what i was worried about. i see you didnt use the clamps that come with the pacesetter.

    how do you like your qtp's? i cant wait to install mine
    No, I used band clamps. They are great. If you use the U-bolt clamps that come with the Pacesetter Y, you will never get it apart again.

    The QTP headers are great. Perfect fit and very durable. They are basically the same as Kooks but they are polished.

  20. #20
    Millennium Falcon mpfranks's Avatar
    Join Date
    Sep 2007
    Location
    Akron, Oh
    Posts
    689

    Red
    2000 Trans Am WS.6

    Quote Originally Posted by 9t8z28 View Post
    Yes, you can add cats to it. The passenger side will be a little easier then the driverside.
    from the pictures it looks like it would be the othe way around

    yeah my girlfriend worked at summit racing, so i got the qtp's since they carried them. i got them for $500 instead of $750. couldnt pass it up.
    Last edited by mpfranks; 12-28-2008 at 12:09 PM.

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. Dilemma - Please help ...
    By Mecinoid in forum General Help
    Replies: 8
    Last Post: 02-26-2010, 05:21 PM
  2. Dilemma
    By txoutlaw69 in forum Firebird / WS6
    Replies: 3
    Last Post: 06-21-2009, 08:44 AM
  3. In a dilemma...
    By Castle in forum Camaro / SS
    Replies: 13
    Last Post: 06-17-2009, 08:23 PM
  4. $$$ dilemma
    By wanna_lS1 in forum External Engine
    Replies: 8
    Last Post: 01-04-2009, 08:12 PM
  5. Z06 or WS6 dilemma
    By ArcticZ06 in forum Almost Anything Goes
    Replies: 58
    Last Post: 08-20-2008, 05:14 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
  •