PDA

View Full Version : Why does my MSP sound like this?


CustomMSP
12-20-2003, 10:28 PM
I have a catless dp and no resonator with the stock muffler, and today I noticed a buzz on engine decceleration from redline to about 4.5k rpm? I had the exhaust checked for leaks and all is good. Is it the stock muffler crapping out? Could it be a bad flex section in the DP?

Here are the links...about half way into the clips...right click and save as

http://www.codewizz.com/msp/exhuast.wav
http://www.codewizz.com/msp/exhuast1.wav

I realized I spelled exhaust wrong...

Thanks.
MackDadam
12-20-2003, 10:38 PM
why are you redlining it? how often do you drive that hard? is it the cold engine rattle? or did it just start doing it
CustomMSP
12-20-2003, 10:42 PM
the car is fully warmed up...and It started doing it after I removed my resonator. But I just want to know if that's what would happend when one removes a resonator. By the way, I was just revving there in neutral.

Thanks.
mazdamp3_18
12-20-2003, 10:49 PM
i have the same thing on my car .. but its a lot worse..

i have no cats and no resonator with the 03.5 msp muffler...

i just got my RM header on tonight..

i have a buzz sound too

its the resonance from the engine...
alexlitov
12-20-2003, 10:51 PM
sounds ricy!!
CustomMSP
12-20-2003, 10:54 PM
I'm afraid you're right alexlitov. But it should sound nice while driving...will go for a drive tomorrow if I feel better...damn flu or whatever the hell I cought...
mazdamp3_18
12-20-2003, 10:56 PM
ill post some sound clips tomorrow or monday on what mine sounds like...


its F*ing loud...
CustomMSP
12-20-2003, 10:57 PM
With out a turbo I can see it being loud...
mazdamp3_18
12-20-2003, 11:18 PM
yeah its really loud...

i dont know if youve heard the speedvision protege's but it sounds almost the exact same under wot
Matthew
12-20-2003, 11:19 PM
didnt you guys every hear my sound clips? yea, its loud, but you get used to it after awhile.
Jhova1012
12-21-2003, 12:27 AM
i kinda like it =P
CustomMSP
12-21-2003, 11:14 AM
Post some clips!!
SuperSpud
12-21-2003, 01:12 PM
its the lack of resinator dude.. thats what its there for, to keep the cracking sound from happening... you really didnt have a whole lot of need to remove it, it doesnt hurt your performance hardly at all if any... its def. worth keeping on to keep that sound from happening..
RyanJayG
12-21-2003, 01:15 PM
yes, put on a friggen resonator... as long as its not a small diameter pipe it wont rob any power, and make that sound pretty much go away.
PaulMP3
12-21-2003, 01:19 PM
my exhaust was never buzzy like that, but it was to loud so i added a high flow resonator.. i love the way it sounds now.

How did you take those sound clips? I want to get some of my car but my digi camera sounds like shit when you do movies with it.

here is a pic of my resonator.

http://www.mazdamp3.com/members/paulmp3/highflowreson.jpg
CustomMSP
12-21-2003, 01:24 PM
I used a mic and my laptop. Have the mic volumeall the way up and cover the mic with a fabric, like a winter hat or something. Put the mic on the ground below the muffler, but make sure it's away from all the water that gets thrown out of the muffler. By the way, the turbo defenitely spools faster. The BPV goes off all the time now. Have fun!
PaulMP3
12-21-2003, 01:27 PM
i want to get a clip while im driving of mine... could be dificult. Maybe i can hang the mic out the trunk while i drive.
CustomMSP
12-21-2003, 01:31 PM
I think if you stick the mic in the trunk you'll pretty much get the same sound as outside?
PaulMP3
12-21-2003, 01:35 PM
yea.. i figure i could shut the trunk on the cord just leaving it hang out a little.
funnylittlman
12-21-2003, 05:51 PM
Originally posted by CustomMSP
I have a catless dp and no resonator with the stock muffler, and today I noticed a buzz on engine decceleration from redline to about 4.5k rpm? I had the exhaust checked for leaks and all is good. Is it the stock muffler crapping out? Could it be a bad flex section in the DP?

Here are the links...about half way into the clips...right click and save as

http://www.codewizz.com/msp/exhuast.wav
http://www.codewizz.com/msp/exhuast1.wav

I realized I spelled exhaust wrong...

Thanks.

I heard someone w/ an Apex'i Downpipe and Spool Catback and it sounds the same. It's just the larger sectoin piping and no cats / resonator which causes this noise unfortnately
CustomMSP
12-21-2003, 07:15 PM
It's actually very quite driving...I was surprized. Doesn't buzz at all.