My M5 making new noises...ideas??

max08e90 · 12-28-2009, 03:26 PM

I have a 2006 M5 that has a Hamann exhaust, and lately every time I turn the car on the exhaust note has a much higher pitch to it untill about 30 seconds of driving. This happens if the car is cold or hot. I like the sound, though am not sure if this could be a potential problem? The sound is literally amplified by 50% and it never used to be this way...Any ideas? Thanks

jibaholic101 · 12-28-2009, 03:30 PM

are you kidding me?!?!

when you turn the car on, it has a higher pitch to it because the RPMs are raised to turn on the car

no worries

Kroy · 12-28-2009, 04:33 PM

Quote:

Originally Posted by max08e90

I have a 2006 M5 that has a Hamann exhaust, and lately every time I turn the car on the exhaust note has a much higher pitch to it untill about 30 seconds of driving. This happens if the car is cold or hot. I like the sound, though am not sure if this could be a potential problem? The sound is literally amplified by 50% and it never used to be this way...Any ideas? Thanks

You say lately so... did this happen after you switched exhaust? When did the new noise start?

ACZakka325i · 12-28-2009, 04:48 PM

Likely is your cats heating up. Since you said it only has started happening lately, maybe your exhaust is finally broken in.

max08e90 · 12-30-2009, 08:49 PM

The noise remains louder throughout all rpms, not just on start up. The exhaust has also been on the car for 20k miles and has never done this. I actually enjoy the noise, just not sure what it is.

12-28-2009, 03:26 PM	#1
max08e90 Second Lieutenant 25 Rep 211 Posts Drives: E92 Join Date: Apr 2009 Location: LA iTrader: (2)	My M5 making new noises...ideas?? I have a 2006 M5 that has a Hamann exhaust, and lately every time I turn the car on the exhaust note has a much higher pitch to it untill about 30 seconds of driving. This happens if the car is cold or hot. I like the sound, though am not sure if this could be a potential problem? The sound is literally amplified by 50% and it never used to be this way...Any ideas? Thanks
	Appreciate 0 Tweet Quote

12-28-2009, 03:30 PM	#2
jibaholic101 Brigadier General 162 Rep 3,496 Posts Drives: women wild Join Date: Nov 2008 Location: Charleston, SC iTrader: (0)	are you kidding me?!?! when you turn the car on, it has a higher pitch to it because the RPMs are raised to turn on the car no worries __________________ some italian, german, and japanese ones; and on order more of the same
	Appreciate 0 Quote

12-28-2009, 04:48 PM	#4
ACZakka325i Colonel 278 Rep 2,008 Posts Drives: 2 stroke Join Date: Jul 2005 Location: CT iTrader: (2)	Likely is your cats heating up. Since you said it only has started happening lately, maybe your exhaust is finally broken in. __________________ (Waitlist): #1 M2CSL (Current): 2016 F15 X5 3.5xdrive - 2010 997.2 C4S Coupe (Past): 2016 F30 340xi M-Sport -2013 535i xdrive 2008 E92 M3 - 2006 E90 325i 2002 E46 325xi - 1991 E30 325i
	Appreciate 0 Quote

12-30-2009, 08:49 PM	#5
max08e90 Second Lieutenant 25 Rep 211 Posts Drives: E92 Join Date: Apr 2009 Location: LA iTrader: (2)	The noise remains louder throughout all rpms, not just on start up. The exhaust has also been on the car for 20k miles and has never done this. I actually enjoy the noise, just not sure what it is.
	Appreciate 0 Quote