Exhaust Slp Loudmouth 1's On My 98 Gt Too Loud?

Discussion in 'SN95 4.6L Mustang Tech' started by Nick D, Sep 17, 2013.


  1. Nick D

    Nick D Member

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    I recently bought a 98 GT and started to put mods on it. I already have installed a CAI, Planning to install a 70mm Throttle body, and now I am going to install aftermarket mufflers/resonators in my car. I love the sound of the SLP Loudmouth 1's but i am concerned if they are too loud. i will be installing these with the stock exhaust system but in the future i may install a catted x - pipe. i leave every weekday at 7am and don't want to wake up any of the neighbors. Do any of you have these installed? Are they too loud for a neighborhood?
    #1
  2. davis3

    davis3 Active Member

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    It'll only be too loud if you use an o/r mid pipe.
    As long as you have cats you'll be fine.
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  3. Nightfire

    Nightfire Mustang Master

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    +1
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  4. sneaky98gt

    sneaky98gt Mustang Master

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    Without cats, LM1s are obnoxiously loud and sound terrible to me.

    With a high-flow catted midpipe, they'll still be plenty loud. My granddad has LM2s (quieter than LM1s) with a catted midpipe on his 04 Mach 1, and it's easily as loud as my car (non-catted Prochamber with 2-chamber Flowmasters) under any kind of load. Unless it was a track or weekend-only car, catted mid + LM2s is about as loud as I'd go. All personal preference, though.
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  5. COramprat

    COramprat Drone Driver Mod Dude

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    Should be able to go on youtube and find a lot of vids for different exhaust combos
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  6. TurdstangGT

    TurdstangGT Active Member

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    I have SLP LM1's and at the time of purchase/installation, I had the stock h pipe. I have recently installed a BBK O/R X Pipe and am now looking for chambered mufflers because the LM1 O/R x pipe combo is just too loud. Although the LM1's sound really good in my opinion, but they are way too loud for a DD. Hope this helps.
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  7. Nick D

    Nick D Member

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    thanks for all the replys, i just bought the slp loudmouth's 1's and will install them with the stock H pipe, then in the future, i will change the catbacks
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  8. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    why are we swapping mufflers in with the rest of the exhaust being stock? Save your time and money and do it all at once. Scour craiglist or the classifieds to get what you want. Sucks being stuck under your car hammering and wrenching away only to do it again in a few months
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  9. Nick D

    Nick D Member

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    well right now it's an idea to change the cats, but if the mufflers satisfy me, i will keep them
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  10. TurdstangGT

    TurdstangGT Active Member

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    With cats, high flow or not. You will be more than satisfied. I know I was before I got my O/R X Pipe. I still, but daily driving is quite the headache now.
    #10
  11. Nick D

    Nick D Member

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    Great! i can't wait until they come, and yes i do think X pipes will be too loud
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  12. TurdstangGT

    TurdstangGT Active Member

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    O/R X pipes with chambered mufflers are the perfect tone.
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  13. COramprat

    COramprat Drone Driver Mod Dude

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    I had an H and a Prochamber through stock muffs and it sounded pretty good.
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