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Borla/LT headers/!cats = Rasp

This is a discussion on Borla/LT headers/!cats = Rasp within the External Engine forums, part of the LSx Technical Help Section category; I read several post about getting rid of rasp. I want to do it right the first time. Should I ...

  1. #1
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    Pearl White
    2000 Trans Am

    Borla/LT headers/!cats = Rasp

    I read several post about getting rid of rasp. I want to do it right the first time. Should I put Cats on my Y pipe? (Can a shop install them for me? or do I have to buy a new Y pipe with cats?) Also, can I still use the o2 sims with those cats?

    Or should I install bullets? If so Where do these go and where can I get them from.

    Sorry for all the noob questions.

    Thanks

  2. #2
    HUNTER S. THOMPSON FAN Raoul-Duke's Avatar
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    Quote Originally Posted by tonydepo View Post
    I read several post about getting rid of rasp. I want to do it right the first time. Should I put Cats on my Y pipe? (Can a shop install them for me? or do I have to buy a new Y pipe with cats?) Also, can I still use the o2 sims with those cats?

    Or should I install bullets? If so Where do these go and where can I get them from.

    Sorry for all the noob questions.

    Thanks
    RASP?? well maybe your problem is that you have a ls1...this is my lt1 z with lt's, 3' ory, no cat, and borla....ohh and its not cammed....the captains hungover, and wants more booze

    http://www.motortopia.com/videos/vie...erican_exhaust

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    Do cats, that will help alot.
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    HUNTER S. THOMPSON FAN Raoul-Duke's Avatar
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    Quote Originally Posted by Ed Blown Vert View Post
    Do cats, that will help alot.
    im having a problem with authority today ed, dont take this personal, but fuck off
    01 m6 z28 - lid / lt headers / 3' ory w no cats / flowmaster catback w 3' dmh e-cutout / nelson pcm tune

  5. #5
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    Pearl White
    2000 Trans Am

    What type of cats (brand)? and also will they go on my existing y pipe?

    Thanks

  6. #6
    HUNTER S. THOMPSON FAN Raoul-Duke's Avatar
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    Quote Originally Posted by tonydepo View Post
    What type of cats (brand)? and also will they go on my existing y pipe?

    Thanks
    well u can weld them in (custom) or buy a catted y pipe

  7. #7
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    Pearl White
    2000 Trans Am

    Will bullets work just as good?

  8. #8
    Formulatastic yellowv's Avatar
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    People are always bitching about the LM sounding like shit with ORY and headers. It is nice to hear someone admit their $700 Borla sounds just as bad. IMO the Borla exhaust is the raspiest thing on the planet w/ headers and ORY. I much prefer the LM. Also true about the LS1 vs/ LT1. The LS1 is a much raspier sounding engine by design. LT1's sound much better. But thats about all they do better

  9. #9
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    Pearl White
    2000 Trans Am

    Well I made a full block off plate 16 gauge metal and my rasp is gone. the only bad part is all the exhaust goes thru the muffler and it makes the car sound lopsided..lol. So I am going to make another 16 gauge plate with about a 1 inch diameter in the center and see if the rasp is still gone. I will let you know this weekend.

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