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LM1 vs. LM2 muffler?

This is a discussion on LM1 vs. LM2 muffler? within the External Engine forums, part of the LSx Technical Help Section category; Hey guys I just got my LM2 and I think I may have gotten the wrong muffler. I think I ...

  1. #1
    Formulatastic yellowv's Avatar
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    LM1 vs. LM2 muffler?

    Hey guys I just got my LM2 and I think I may have gotten the wrong muffler. I think I may have gotten the old resonator instead of the bullet muffler. From the pics I have seen the bullet is a fatter looking muffler. Mine looks just like the pictures of the LM1 mufflers I have seen. What does the inside of the LM1 muffler look like now? I had an old one and I believe the resonator was just a larger section of pipe with nothing inside. The one I have now looks like a straight though muffler as it does have a core. Which muffler did I get?

  2. #2
    Pathelogical Liar BlackLT1Z28's Avatar
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    There should have been an invoice in the box telling you what you got. The only thing I can tell you is that they are both the same design, but the bullet muffler is larger than the resonator. Just slap it on and see what it sounds like.

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    Slower Than a 3rd Gen juiced99ws6's Avatar
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    Mystic Teal
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    the bullet will be a straight through design with the opening no larger than the diameter of the pipe if I remember correctly. The muffler will flare out and have all kinds of little circles all the way through that quites the exhaust a bit. Sorry I couldnt find any pics and I dont know if you can visualize what im trying to say

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    Slower Than a 3rd Gen juiced99ws6's Avatar
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    Mystic Teal
    99 Trans Am & 01 CBR 929

    ok it should look similar to this only I believe the holes are much bigger in the SLP bullet than the dynomaxx.

    http://content.godragracing.com/pro/pro4/muffler.jpg

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    Formulatastic yellowv's Avatar
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    It's the bullet muffler. On SLP's stock photos they make the bullet muffler look like it is larger in diameter than the resonator, however they list the dimensions as being exactly the same. As I thought the resonator is totally hollow inside. The bullet muffler looks a lot like the dynomax bullet inside. As for the invoice it says it's the bullet but we all know invoices don't always mean you actually have that part in the box. Thanks.

  6. #6
    Slower Than a 3rd Gen juiced99ws6's Avatar
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    Mystic Teal
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    no problem, i have had both and I know that they look almost the same. Im glad you figured it out.

  7. #7
    38 of 139 PontiacFan's Avatar
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    True, ..., the newest designs on the LMI & the LMII look identical on the outside. That's why they developed the 'modular' design, so you could swap one out for the other when ya want.

    The LMI is simply a big hollow tube. No internals.
    The LMII is a straight thru-design, yet it does have some internal louvers/structure inside. See photo attached, this is the LMII.
    Last edited by PontiacFan; 08-12-2007 at 02:45 PM.

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    Member Daniel P.'s Avatar
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    What the sound difference?, and PontiacFan have you been down to the new track in hastings yet?

  9. #9
    Junior Member logsws6's Avatar
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    artic white
    99 ws6 t/a

    i also just got a lm...i was sent the lm2 bullet ...the guy who put it on said there was little bumps inside the muffler....i always thought the lm was hollow..but the lm2 sounds good so i don't care...i'll just buy the lm muffler.

    A4 debaffled,sealed,full SLP exhuast,SLP lid,blackwing

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