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How can I silence my exhaust at start-up?

This is a discussion on How can I silence my exhaust at start-up? within the General Help forums, part of the LSx Technical Help Section category; Just as the title says.... I have the SLP Loudmouth and it obviously wakes up the neighborhood in the morning ...

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    Junior Member ntymd8r's Avatar
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    How can I silence my exhaust at start-up?

    Just as the title says....

    I have the SLP Loudmouth and it obviously wakes up the neighborhood in the morning with a loud ROAR! Is there anyway to slip some type of silencer on the exhaust tips at start up to quiet her down?

    Thanks
    2001 Chevrolet Camaro Z28, M6, Eibach Pro-kit, BMR STB, BMR Adj-PHB, BMR RB's, BMR SB's, Bilstein HD's, K&N, SLP LM, SLP Y-Pipe, SLP Intake, Predator Custom Tuned...

    Treat her well and she'll put a smile on your face every time you get on her!

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    Member bhunter0830's Avatar
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    It's called "Loudmouth" for a reason. I have the same problem, my neighbors know when I come and go unfortunately. My suggestions is to do what I did... Replace the LM with a muffler of choice and then get a cut out when you want to make some noise. Just my opinion.
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    Junior Member ntymd8r's Avatar
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    Quote Originally Posted by bhunter0830 View Post
    It's called "Loudmouth" for a reason. I have the same problem, my neighbors know when I come and go unfortunately. My suggestions is to do what I did... Replace the LM with a muffler of choice and then get a cut out when you want to make some noise. Just my opinion.
    That's what I was dreading....having to do that!

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    Member bhunter0830's Avatar
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    Not exactly what you want to use on a sneak attack!

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    Junior Member ntymd8r's Avatar
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    Hehehe

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    Spaz is My Mentor SMWS6TA's Avatar
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    Cali allows you to have LM's? Cutout's in Cali?


    But yeah no chance of quieting it. They are by design loud. I'm surprised you pass emission in Cali with a LM.

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    Junior Member ntymd8r's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    Cali allows you to have LM's? Cutout's in Cali?


    But yeah no chance of quieting it. They are by design loud. I'm surprised you pass emission in Cali with a LM.
    I guess so....when I bought it, it stated 50 state legal. Been to 3 smog checks so far, 2 being regular and 1 being the more in depth one....passed all. The Predator tune as we'll....

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    How can I silence my exhaust at start-up?

    stuff a banana in each tail pipe that should keep it quite for a bit
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    Senior Member theorangeguy's Avatar
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    Quote Originally Posted by kingls1 View Post
    stuff a banana in each tail pipe that should keep it quite for a bit
    potato's work way better...they'll shoot out once enough pressure builds

    Im not saying I have ever done that or anything...
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    Spaz is My Mentor SMWS6TA's Avatar
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    Quote Originally Posted by kingls1 View Post
    stuff a banana in each tail pipe that should keep it quite for a bit
    Quote Originally Posted by theorangeguy View Post
    potato's work way better...they'll shoot out once enough pressure builds

    Im not saying I have ever done that or anything...


    "Friendly banter" is ok in the tech sections as long as it stays "Friendly" as please keep it civil guys.

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    No real fix that I am aware of, other than swapping out the system. An electric cutout is a great way to control the sound once you tone things down.

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    Moderator Firebirdjones's Avatar
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    Get yourself a coan baffle. They slip into the exhaust stream anywhere you have a pipe joint. Can be installed/removed at any time. I've used them in the past to tone down systems.

    Actually SLP used them starting in about 2001 when their optional dual/dual systems were deemed too loud to pass the drive by noise standards. Rather than redesign a new muffler, a simple coan was inserted in the I-pipe right before it entered the muffler.

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    Retired NOT tired SteveC's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    Cali allows you to have LM's? Cutout's in Cali?
    The cut out is illegal, and you will find that out when you have to go to a "State test run facility", for a smog check, any "cat back" exhaust system is legal in California, however be aware that the police do not have to meter the vehicle for db anymore, the law was changed to read "at the officers discretion", which means if he thinks it is to loud, then the burden is on you to prove that it isn't. The law is tolerant up to 75 db for our year vehicle.

    Good luck with that with a loudmouth resonator.

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    Moderator 98TransAmWs-6's Avatar
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    Most people want their car louder not quieter. As others have stated the only way to quiet the loudmouth is to swap to a different muffler or do as fbj said. I personally like how loud my lm1 is with LTs.
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    Moderator Firebirdjones's Avatar
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    Quote Originally Posted by 98TransAmWs-6 View Post
    Most people want their car louder not quieter. As others have stated the only way to quiet the loudmouth is to swap to a different muffler or do as fbj said. I personally like how loud my lm1 is with LTs.
    Hey speak for yourself, as us oldfolk turn into grey hairs we want quieter

    I run a mufflex 4" system on my wifes car with a magnaflow, yeah it's too loud. Been wanting to take that off for the longest time.

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    Moderator 98TransAmWs-6's Avatar
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    Quote Originally Posted by Firebirdjones View Post
    Quote Originally Posted by 98TransAmWs-6 View Post
    Most people want their car louder not quieter. As others have stated the only way to quiet the loudmouth is to swap to a different muffler or do as fbj said. I personally like how loud my lm1 is with LTs.
    Hey speak for yourself, as us oldfolk turn into grey hairs we want quieter

    I run a mufflex 4" system on my wifes car with a magnaflow, yeah it's too loud. Been wanting to take that off for the longest time.
    Which is why I said most lol and not all.

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    Moderator Firebirdjones's Avatar
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    Quote Originally Posted by 98TransAmWs-6 View Post
    Which is why I said most lol and not all.
    I know, I'm just poking fun at ya

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    Smiles for 9.5 Years cammed goat's Avatar
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    My neighbor calls my car his "alarm clock" as he knows when to wake up...when I start my car.

    I have been stopped occasionally to be told my car is a little on the loud side...but sounds nice. I'm thinking about ordering a skip-shift eliminator so I can short-shift again to keep Johnny Law happy.


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    Moderator 98TransAmWs-6's Avatar
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    Quote Originally Posted by cammed goat View Post
    My neighbor calls my car his "alarm clock" as he knows when to wake up...when I start my car.

    I have been stopped occasionally to be told my car is a little on the loud side...but sounds nice. I'm thinking about ordering a skip-shift eliminator so I can short-shift again to keep Johnny Law happy.
    My neighbors hate how loud my car is. Now after my rebuild is complete they will hate it even more lol. 230/238 camshaft LTs and LM1 through a 396.

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    Junior Member BigTeddy254's Avatar
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    man screw that i put 3/34 stainless straights on every ls i have had. best sound ever and if ppl hate it then thats too bad cuz it dont get no better soundin than that my friends, cops check em but i welded a glasspack over my stainless to look like a muffler hehehe and it has a plus if ppl arent paying attention or on their phone drivin like crap give em a ear full right beside em and watch em freak the f out and give em a tsk tsk tsk lmfao LS trolling is the best

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