Exhaust volume decibel ratings

B

bomberrat

New Member

Oct 6, 2004

8

0

0

Lompoc, CA

Dec 21, 2004

#1

• Dec 21, 2004

• #1

Does anyone know if there are any websites that have actual solid decibel level numbers for various exhaust systems? I've found a bunch with sound clips and whatnot, but no "solid" numbers. I know it's mostly a personal opinion about what sounds best, but I leave for work at 5 am every morning, and don't much want the cops crawling up my butt after I spend $500+ on a new system. Thanks! Now, back to trying to get my Dalmation/Harlequin Dane to settle down.

 

B

bdcardinal

tree hugger

Jun 10, 2003

3,612

16

69

santa barbara, CA

Dec 21, 2004

#2

• Dec 21, 2004

• #2

i dont know of any. i just know that it has to be under 96.5 Db.

 

Green4.6GT

Size Matters

Founding Member

Dec 31, 2001

2,910

0

0

Regina, Sask, Canada

Dec 21, 2004

#3

• Dec 21, 2004

• #3

87 db at 3k rpm is the legal limit up here... but they cant really inforce it.. i got pulled over for having a loud car when my car was stock, right down to the paper filter.. and it ran 91 db... so i got the govt insurace agency to issue me a letter saying the car has legal exaust, after bitching like no other because it was bone effing stock!!!, 6 cats and all!!!.. so on went the exaust and now i ahve a letter saying that its not too loud

my car is WAY louder now than it was, and i havnt gotten hassled at all, just dont rev it near cops and youre fine, no car is that loud at idle, just dont draw attention to yourself ...

 

kah9911

New Member

May 20, 2004

102

0

0

Downingtown, PA

Dec 22, 2004

#4

• Dec 22, 2004

• #4

There was a Mach 1 site that tested the SLP, MagnaPack and Bassani cat back. Cant find it now but I remember that @ 3000 that SLP was 103 db! I will keep looking for it. -Kevin

 

kah9911

New Member

May 20, 2004

102

0

0

Downingtown, PA

Dec 22, 2004

#5

• Dec 22, 2004

• #5

Sorry double post.

 

kah9911

New Member

May 20, 2004

102

0

0

Downingtown, PA

Dec 22, 2004

#6

• Dec 22, 2004

• #6

Finally found it!

http://www.mach1review.com/CATBackExhaustSystemsReview.html

 

B

bdcardinal

tree hugger

Jun 10, 2003

3,612

16

69

santa barbara, CA

Dec 22, 2004

#7

• Dec 22, 2004

• #7

i did a sound test at work today on a 04 mystichrome cobra with a 2.2L KB, Bassani catted X pipe and Bassani catback. the legal limit here is 96.5, it blew 108 and 106Db. it was just as a favor to a friend so nothing official. if it had been a real test we wouldve made him take off the X pipe and put on the stock one(only one thats legal). the KB is legal though.

 

FallenPhoenix

New Member

Nov 22, 2003

911

0

0

Odessa Tx

Dec 22, 2004

#8

• Dec 22, 2004

• #8

wow, my car doesn't seem that loud... 104db is a lot!

 

triggz

Founding Member

May 15, 2002

1,218

0

37

Gadsden, AL

Dec 22, 2004

#9

• Dec 22, 2004

• #9

hah, ive been complimented on my exhaust every time ive been pulled over in tennessee and alabama - catless factory midpipe with 2chamber flows (non delta/40).
*loves the south*


what do you use to measure the dB rating? do you have to go to an emissions test place?

 

B

bdcardinal

tree hugger

Jun 10, 2003

3,612

16

69

santa barbara, CA

Dec 22, 2004

#10

• Dec 22, 2004

• #10

we have a Db meter that we calibrate before each use. in CA you have to go to a referee station. there are only 34 in the state IIRC.

 

YardSpecial

New Member

Mar 20, 2003

2,664

0

0

MT

Dec 22, 2004

#11

• Dec 22, 2004

• #11

SLP rule with cats !!!

Louder then any other without cats !

 

Tylerb59

Banned

Mar 7, 2003

1,895

0

0

Arlington, WA

Dec 22, 2004

#12

• Dec 22, 2004

• #12

We'll have to compare, Cav.

My car with UPR O/R X and Magnapacks is way overboard at times.

 

J

jdmoore144

New Member

Nov 16, 2004

5

0

0

Fort Worth

Dec 22, 2004

#13

• Dec 22, 2004

• #13

Green4.6GT said:

87 db at 3k rpm is the legal limit up here... but they cant really inforce it.. i got pulled over for having a loud car when my car was stock, right down to the paper filter.. and it ran 91 db... so i got the govt insurace agency to issue me a letter saying the car has legal exaust, after bitching like no other because it was bone effing stock!!!, 6 cats and all!!!.. so on went the exaust and now i ahve a letter saying that its not too loud

my car is WAY louder now than it was, and i havnt gotten hassled at all, just dont rev it near cops and youre fine, no car is that loud at idle, just dont draw attention to yourself ...

Click to expand...

six cats huh. that is confusing i thought they all came 4. atleast mine did

 

jmk97GT

Member

Oct 29, 2004

178

0

16

Dec 23, 2004

#14

• Dec 23, 2004

• #14

4 cats + 2 resinators.

 

YardSpecial

New Member

Mar 20, 2003

2,664

0

0

MT

Dec 23, 2004

#15

• Dec 23, 2004

• #15

The stangs with offroads are quieter then my combo, thats what i have heard so far........

Would LOVE to hear your Stang !

Rumor is I am 104 DB'S at 3000k !!

Not loud enough !

 

FallenPhoenix

New Member

Nov 22, 2003

911

0

0

Odessa Tx

Dec 23, 2004

#16

• Dec 23, 2004

• #16

jmk97GT said:

4 cats + 2 resinators.

Click to expand...

acually some came with 4 cats and 2 small pre-cats right up next to the manifolds so they would light off quicker to help pass on cold start emissions testing.

 

T

The Flash

Founding Member

Feb 14, 2002

544

0

0

Kennesaw, GA

Dec 23, 2004

#17

• Dec 23, 2004

• #17

Check this out:
http://www.svtoa-atlanta.org/phpBB2/upload/showthread.php?s=&threadid=1212

 

Green4.6GT

Size Matters

Founding Member

Dec 31, 2001

2,910

0

0

Regina, Sask, Canada

Dec 23, 2004

#18

• Dec 23, 2004

• #18

96-98 GTs = 6 cats , my stock midpipe is laying in the back yard, id take a pic, but its under a foot of snow, so you can all wait until spring