How Loud is yours?
Thread Starter
Staging Lane
Joined: Jun 2005
Posts: 51
Likes: 0
From: Lansing, MI
How Loud is yours? I just had the loudness of my SLP loudmouth system measured for a study some engineering students at MSU are doing. My car has stock cats, y and manifolds. It was measured using GMs standard at roughly 3750rpm, 65* outside, and engine at temp. Driver-side tip avg. was 105dB. Passenger tip avg was 112dB (because of basically straight pipe on this side). I had the loudest car they tested only got beat by a harley with aftermarket pipes (i have no idea what they were) at 118dB. I was told all of the other cars with aftermarket exhuasts were not above 100dB. Anyone have #'s on thier rides to share?
Here's a link that compares dB's of everday sounds if your curious.
http://www.lhh.org/noise/decibel.htm
Here's a link that compares dB's of everday sounds if your curious.
http://www.lhh.org/noise/decibel.htm
Last edited by RICRH8R; Nov 3, 2005 at 04:24 PM.
Thread Starter
Staging Lane
Joined: Jun 2005
Posts: 51
Likes: 0
From: Lansing, MI
We had to keep it at 3750 for comparison purposes. We didnt have time to play around to see what it was at higher rpm's i had to get back to work i sacrificed my lunch hour as it was. Im sure it would be up around that maybe alittle less since i dont have headers. i thought about gutting the cats i had about 3 weeks to do it since i found out but to much overtime the last few weeks scrapped that idea, oh well i have till the snow melts next spring.
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i would also like to know what the legal limit is as i am probably over it. it would be nice to get mine checked somewhere and keep the paper in my car if i get pulled over. any added insurance helps.
. 
mine is 88 decibel cruising on 6th @ 75 mph with stock everything but GMMG cat back
dont know about outside, anything around 90 decibel and above will damage the ear drums! so my doctor say !
get earplug and call it a day
(I actually used them on my car and its sweet when driving for 3 hours straight
bye
dont know about outside, anything around 90 decibel and above will damage the ear drums! so my doctor say !
get earplug and call it a day
(I actually used them on my car and its sweet when driving for 3 hours straight
bye
I honestly havent heard an LSX powered car that is louder than mine, aside from open headers. 3" mandrel bent Y-pipe, no cats, into a 3"-4" flowmaster merge and a 5" X 12" dynomax race bullet, dumped at the axle. At the drive through I have to kill the car, its pointless even trying. I set off car alarms at 1500 rpms. Inside the car is basically unbearable at any speed, you dont know drone, I actually get sick to my stomach the vibration is so harsh. Old muscle car guys give me a big smile and a thumbs up, women (especially in nicer cars) give me atleast a dirty look, and sometimes yell things like, "WHY THE **** DO YOU NEED A CAR THAT LOUD!!!!" This be why I am putting on alittle more "involved" muffler and getting the **** behind my car. Decibel test..........I dunno, maybe 140 at WOT. Seriously. TSP 231/237 112, 1 3/4 dynatec LTs, 11.2:1 compression.
Brandon
Brandon
On The Tree
Joined: Sep 2005
Posts: 126
Likes: 0
From: Albuquerque, New Mexico
Not sure how loud my system is... I just put it in on monday: pacesetter LT's with TSP True Duals. Love the sound and all i can tell you about the loudness is that it's enough to set off car alarms while driving through the parking lot. This happened to me this morning when i was leaving class here at UNM. All i could do was laugh, he he he 
From a doctor and a nurse the actual point of damaged/loss of hearing starts @ approx 155 db and your heart can stop @ 164db so if you look @ it, BBC's w/ straight headers tend to be somewhere near 150+ because they are chest poundingb as hell AND they do tend to mess up hearing of many people. and thats jsut at IDLE!
