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Whats Best>?>

This is a discussion on Whats Best>?> within the External Engine forums, part of the LSx Technical Help Section category; Ok guys I'm getting a SLP lm catback and was wondering if I should get the SLP Y to??? How ...

  1. #1
    Junior Member Yellow_Bird's Avatar
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    Cool Whats Best>?>

    Ok guys I'm getting a SLP lm catback and was wondering if I should get the SLP Y to??? How much of a difference would it make in sound and performance???
    Thanks

  2. #2
    old timer blue02Z's Avatar
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    i would say no unless you plan on getting headers, because if you do, then you'll have to get a new y or have that on really modified

  3. #3
    Senior Member splitfinger09's Avatar
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    Bright Rally Red
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    ^^^ if you plan on getting headers in the future the Y pipe you buy now wont work with headers. I have the loudmouth 1 right now, but I am getting rid of it because im getting headers. To many people are saying how it sounds raspy and like a garbage truck w/headers. Dont get me wrong it sound awesome on stock manifolds, just like a racecar imo. Im doing QTP LT's with TSP true duals. No Y pipe needed with that system.

  4. #4
    Senior Member INMY01TA's Avatar
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    Not much if any gain in performance or sound by changing just the y pipe.

  5. #5
    Member 180ls1's Avatar
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    1998 Firebird Formula WS6

    I have heard of people getting small gains from replacing the flattened pary of the factory y pipe which i assume you are talking about that. personally i am going to get a custom true duals setup from my stock cats and manifolds back.

  6. #6
    NY Representative basballny2's Avatar
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    are you getting headers in the future? if so get the magnaflow catbak unless u want to hear rasp

  7. #7
    member since may 2000 nhraformula's Avatar
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    Quote Originally Posted by 180ls1 View Post
    I have heard of people getting small gains from replacing the flattened pary of the factory y pipe which i assume you are talking about that. personally i am going to get a custom true duals setup from my stock cats and manifolds back.
    people get up to about 5 rwhp from swapping y pipes, not worth it.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

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