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Best muffler for SLP Loudmouth 1

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Old 05-09-2017, 05:44 PM
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Default Best muffler for SLP Loudmouth 1

I have a SLP LM1 with stock manifolds and cats on my car that isn't super loud but drones all the time. I want to put a bullet muffler in place of the dummy LM1 muffler that will get rid of the drone and resonance inside the car. I've heard the Borla XR1 which is still pretty aggressive and the Magnaflow 14419 bullet which has a nice growl but I can't tell much more from Youtube videos. Does anyone have any recommendation for other bullet mufflers that aren't too loud or drone?
Old 05-09-2017, 07:07 PM
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The magnaflow is good. I've had the dynomax bullet cat back with an off road y pipe and it was pretty aggressive. For drone the magnaflow might be better and if you want extra noise control you could have a separate bullet muffler welded inline before the main muffler to act as a resonator.
Old 05-09-2017, 07:13 PM
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I originally had the LM1 before I replaced it with the Magnaflow 14419. It sounds much better now. Much deeper with a lot less rasp and drone
Old 05-10-2017, 04:00 PM
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I have a Borla XR1 on mine and I love the sound.
Old 05-12-2017, 05:15 PM
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I like my Magnaflow alot...


I am probably going to change it out to a Madhammer exhaust
Old 05-12-2017, 05:27 PM
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Decided to go with the Magnaflow 14419. I like the deep sound better than most other mufflers. Just hoping it doesn't drone on the highway.
Old 05-12-2017, 05:31 PM
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Even with my long tubes and a ORY I get very little drone, so on your setup id expect no drone at all
Old 05-13-2017, 04:36 PM
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Corsa= no drone...
Old 05-26-2017, 04:02 PM
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Never had a problem w/ the LM1 but a lot seem to like Magnaflow.
Old 06-01-2017, 01:33 PM
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I have the LM2 on mine with the SLP Y pipe.
It can drone if I let it but, welding a SS strap across it's length moved the drone point up about 1000 rpm above my cruising rpm on the freeway.
Cheap fix but it works. (spent some of my time developing active noise cancellation during my engineering career)




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