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Old 05-07-2015, 09:53 PM   #1
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flowmaster vs slp loudmouth?

Is the slp loudmouth gonna be louder than a flowmaster? And how much louder? Thanks! I have a 1998 mustang gt
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Old 05-07-2015, 09:57 PM   #2
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If you told us what flowmaster people could help a bit more. The lm1s are pretty loud though
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Old 05-07-2015, 10:38 PM   #3
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flowmaster vs slp loudmouth?

Only flowmaster than can really compete with a loudmouth series I, in terms of loudness, is a super 10.


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Old 05-07-2015, 11:46 PM   #4
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Slp lm1's all the way

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Old 05-08-2015, 12:25 AM   #5
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I would Actually prefer a flowmaster 40 or super 44 over a LM1. I don't like all the rasp with them, and no distinct tone. I had my LM1s on for about a week and got a set of magnaflow magnapacks and like them much more. Still very loud when you get on it, not as much rasp, and they have a Nice deep tone. A lot of it matters what mid pipe your running, if It's off road then it will be louder verse a catted or stock mid pipe. General rule is if going with a h pipe use chambered mufflers, x pipe straight thru mufflers, but x pipes do sound good with either IMO.

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Old 05-08-2015, 01:04 AM   #6
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I wouldn't mind rasp or drone at all. My 44s don't drone or rasp I'm thinking about some 40s myself. But op from what ice heard slps will get annoying if it's a daily


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Old 05-08-2015, 02:33 AM   #7
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Ive had flowmasters and I currently have SLP. I like both but the SLPs are more unusual and help you stand out. They are MUCH louder than flowmasters. Like double the volume. When I first put them on I was worried I'd get pulled over every time I went past a quarter throttle. I have yet to be pulled over and have past several cops with them now.

I LOVE the sound of the SLPs, they sound like a friggin race car on a stock stang and I can only imagine they get better with more power. I would however highly advise that you think strongly about getting them if you intend to get a different mid pipe. An o/r pipe with these could easily start to move into the I might actually damage my hearing volume levels, and I'm not kidding.


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Old 05-08-2015, 08:22 AM   #8
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if your car is super loud, it better be able to back it up. dont be another one of those ear splitting cars that cant even run 12s. to answer your question, slp is louder.
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Old 05-08-2015, 08:32 AM   #9
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I have the flowmaster super 10's and I absolutely love them. I was also on the fence between them and the slp's. Glad I went with the flowmaster super 10's.

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Old 05-08-2015, 08:40 AM   #10
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flowmaster vs slp loudmouth?



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Old 05-08-2015, 11:21 AM   #11
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Quote:
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if your car is super loud, it better be able to back it up. dont be another one of those ear splitting cars that cant even run 12s. to answer your question, slp is louder.

While I agree with this to some extent, there's too many slow old cruisers that sound good but have next to nothing to back it up...

You wouldnt want to add a blower before exhaust....

My vote is for SLP though. Like mentioned above after 2.5k you'll feel like you're driving a nascar


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Old 05-08-2015, 11:31 AM   #12
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Friend of mine always said, if you can't have it fast, might as well be loud.


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Old 05-08-2015, 12:02 PM   #13
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Mine doesn't sound like nascar at all. It's while under acceleration it's all 60-70s muscle car. And when cruising on the highway it's deep. No drone.


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Old 05-08-2015, 08:54 PM   #14
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Agree with deep during cruise. Don't have great frame of reference on 60s-70s muscle sound but when accelerating it sounds very strong. The nascar sound is near full throttle.


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Old 05-08-2015, 09:17 PM   #15
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Make it loud and nasty. I've only been pulled over once for being "too loud".
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Old 05-08-2015, 09:24 PM   #16
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Straight pipe, ftw...yep still happy with it. My grandma said, "why are ur cars always so loud son?"

Because at $4 per gallon, I wanna hear every drop of gas burning!!

She chuckled

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Old 05-08-2015, 09:26 PM   #17
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I've been pulled over too, for being too loud. Cop said change it back to stock. To which I answered, its stock sooo...
He just walked away. Which he was one of those cops.


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Old 05-09-2015, 10:01 AM   #18
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The cop literally said, "is your exhaust a complete exhaust?" I said, yes. You see the tail pipes sticking out the back? :what: then he replied, "I don't even know what to tell you." Well then why in the heck did you pull me over?
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Old 05-09-2015, 07:50 PM   #19
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Thanks everybody!
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Old 05-10-2015, 12:36 PM   #20
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If you can't be fast, might as well be loud.
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Old 05-10-2015, 12:55 PM   #21
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I guess I'm in the minority. Nothing worse than having a car that sounds fast and isn't. Its all good though, the slow car is loud its easier to know where it is behind you so its clear to change lanes lol.
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Old 05-10-2015, 12:59 PM   #22
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I guess I'm in the minority. Nothing worse than having a car that sounds fast and isn't. Its all good though, I guess if the slow car is loud its easier to know where it is behind you so its clear to change lanes lol.
I know my Mustang isn't the fastest. Hell I've never gone over 100 in it. But the exhaust tone is music to my ears. Everyone who hears it thinks it sounds great and love the fact it's not another Mustang with a flowmaster exhaust system.
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Old 05-10-2015, 01:02 PM   #23
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I had lm1's on my 2v. They are one of the best sounding motors in the mustang. Sounds mean but that's it

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Old 05-10-2015, 01:04 PM   #24
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I'm mainly talking about the cars that are bone stock except an OR pipe and welded in Super 10s or something that is going to have a tough time beating one of the new V6 sedans at the track. There is always going to be a faster car out there obviously.

Also something to be said for the sleeper effect and the look on someone's face when the stockish looking GT with the mild stockish sounding exhaust puts an epic smackdown on the real loud overt car.

Nice thing about these cars, there are options for all different sorts. Just don't be the ******bag who guns the car with the real loud exhaust through the neighborhood at 6AM on the way out to work. Had a few guys like that in my old neighborhood.
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Old 05-10-2015, 02:08 PM   #25
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I'm mainly talking about the cars that are bone stock except an OR pipe and welded in Super 10s or something that is going to have a tough time beating one of the new V6 sedans at the track. There is always going to be a faster car out there obviously.

Also something to be said for the sleeper effect and the look on someone's face when the stockish looking GT with the mild stockish sounding exhaust puts an epic smackdown on the real loud overt car.

Nice thing about these cars, there are options for all different sorts. Just don't be the ******bag who guns the car with the real loud exhaust through the neighborhood at 6AM on the way out to work. Had a few guys like that in my old neighborhood.

I hate that *******. I keep it under 2k in sensitive areas.


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Old 05-10-2015, 02:22 PM   #26
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Coming home at 3 am I don't even give it gas in my neighborhood, I just coast down the hill and into my driveway lol
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Old 05-11-2015, 12:54 AM   #27
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I have slp with bassani off road x pipe. I love it. I heard my car from outside take off for the first time. It honestly sounds like a car that is meant to be at a drag strip. Sad part is you lose low end torque.


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Old 05-11-2015, 03:11 AM   #28
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I have slp with bassani off road x pipe. I love it. I heard my car from outside take off for the first time. It honestly sounds like a car that is meant to be at a drag strip. Sad part is you lose low end torque.


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How do you lose low end torque?


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Old 05-11-2015, 07:31 AM   #29
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Ya how? Lol


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Old 05-11-2015, 07:52 AM   #30
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Don't you sacrifice low end slightly when you have an x-pipe?

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Old 05-11-2015, 08:00 AM   #31
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Don't you sacrifice low end slightly when you have an x-pipe?

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Pretty sure you're thinking of an H pipe


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Old 05-11-2015, 08:19 AM   #32
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No. Power is the same between the two. Sound is different.

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Old 05-11-2015, 09:03 AM   #33
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Lol can't figure out how to share an article from American muscle. ..but they say slightly higher in the rpm band for power in an x and slightly higher power in the low rpm range for an h.

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Old 05-11-2015, 11:25 AM   #34
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Ah so its the mid pipe your talking about. That's interesting, must have something to do with the way exhaust pulses interact with each other.


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Old 05-11-2015, 12:22 PM   #35
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Lol can't figure out how to share an article from American muscle. ..but they say slightly higher in the rpm band for power in an x and slightly higher power in the low rpm range for an h.

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Mustang101 - Always take anything the rags/websites say with a grain of salt. Power difference between an H and an X is negligible. Get the one that is going to sound better with your combo. Generally, people tend to like the H with chambered mufflers and the X with straight throughs better but there are a ****ton of vids on youtube with all different setups.
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