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Headers and hi-flow cats

This is a discussion on Headers and hi-flow cats within the External Engine forums, part of the LSx Technical Help Section category; whats up guys i have a few questions. 1st one is what do hi-flow cats actually do? over the stick ...

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    Member whiteLS1TA's Avatar
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    Headers and hi-flow cats

    whats up guys i have a few questions. 1st one is what do hi-flow cats actually do? over the stick cats? and what do you think would be good headers lt or shorty? whats the difference, and are they hard to install or should i get them professonally done? i have about 450 to spend on headers what do you guys recommend?

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    Member Liveforfunjim's Avatar
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    Maple Red Metalic (MRM)
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    Well my 00'ws6 had the SLP LTs with 3"y pipe and cats already put on. Im not a big fan because the exhaust is sitting so low i cant afford to lower the car.

    If i could afford new headers they would be mid length..

    my .02
    Last edited by Liveforfunjim; 06-14-2007 at 11:16 AM.

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    Quote Originally Posted by Liveforfunjim View Post
    Well my 00'ws6 had the SLP LTs with 3"y pipe and cats already put on. Im not a big fan because the exhaust is sitting so low i cant afford to lower the car.

    If i could afford new headers they would be mid length..

    my .02
    how much ground clearence do you have.....I just ordered some SLP LT's

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    Visualize°Design°Create SSwt00SS's Avatar
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    Quote Originally Posted by whiteLS1TA View Post
    whats up guys i have a few questions. 1st one is what do hi-flow cats actually do? over the stick cats? and what do you think would be good headers lt or shorty? whats the difference, and are they hard to install or should i get them professonally done? i have about 450 to spend on headers what do you guys recommend?
    Pacesetter is the best bang for the buck. get the ceramic coated LT's and ORY and you will be fine...
    http://cgi.ebay.com/ebaymotors/98-99...20781478QQrdZ1

    if you want catted a few member have gone to the OBX headers with cats...
    http://cgi.ebay.com/ebaymotors/OBX-H...20958801QQrdZ1

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    Member Liveforfunjim's Avatar
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    Maple Red Metalic (MRM)
    2000 TransAM WS7

    When looking at the car from the side you can see the exhaust sitting about 2 inches lower that the body... There is a mildly steep driveway i pull into for work, and at the apex of the drive i have less that 3/4" clearance...

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    Senior Member 35thAnniZ28's Avatar
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    slp hangs too low..

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    Bmike Dillard99's Avatar
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    450 check out speedinc.com they have some pacesetters for 374 and Hookers 399 there is so many to chose from but I ordered Hookers Headers which are a good set of headers LTs which I would recommend than the shorties.

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    Member Ripper415's Avatar
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    Quote Originally Posted by SSwt00SS View Post
    if you want catted a few member have gone to the OBX headers with cats...
    http://cgi.ebay.com/ebaymotors/OBX-H...20958801QQrdZ1
    no no no, the obx doesnt have cats, those are resonators (empty tubes that look like cats in the hopes of reducing rasp/passing a visual inspection). they will still throw codes and youll fail a computer disgnostic inspection.

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    Member whiteLS1TA's Avatar
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    Quote Originally Posted by Ripper415 View Post
    no no no, the obx doesnt have cats, those are resonators (empty tubes that look like cats in the hopes of reducing rasp/passing a visual inspection). they will still throw codes and youll fail a computer disgnostic inspection.
    ok here is my set up i got Slp LM2 with slp y pipe. and i want to get headers what do i need to change. i i dont know what i should go with shorty or LT im feeling the pacesetters though.

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    Bmike Dillard99's Avatar
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    Like my last post dont waste you money time on shorties pacesetters LTs are good you'll love them and there only 374.99 on speedinc.com free shipping

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    The Bandit Wesman's Avatar
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    Quote Originally Posted by whiteLS1TA View Post
    ok here is my set up i got Slp LM2 with slp y pipe. and i want to get headers what do i need to change. i i dont know what i should go with shorty or LT im feeling the pacesetters though.
    Go with Longtubes and don't look back.

    However, if you are planning on keeping your LM2, prepare for it to be pretty damn loud

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