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      02-09-2012, 01:19 PM   #15
kitw
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Drives: F91 M8, 991.2 GT3
Join Date: Jun 2007
Location: Bay Area, CA

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Quote:
Originally Posted by aus View Post
Get a tune to get rid of the start up emissions cycle. It's what causes all that "drone" in the morning. It's pretty loud with the Akra too until the car warms up.
You don't want to do this with the stock cats in place.

Quote:
Originally Posted by aus View Post
You could also get an exhaust shop to weld in some Heimholtz chambers for around $200 I'd it's really drone you hear while cruising that's bothering you.
this won't help at all, with the 2000 rpm boominess. Remember, the MXP doesn't have any drone at all (it's very quiet under steady state throttle) it's the transient throttle at 2000 rpm that is a little apparent. I actually think the MXP is pretty good in this regard, compared to many others.

If this level of noise bothers you, here are your choices:
- Dinan
- Corsa
- Eisenmann Sport (although even it has a bit)
- BMW Performance
- Innotech

Nothing else is going to be quiet enough. (I haven't tried the Bastruck or Remus Sport, or supersprint, but I'm up to 23 other combinations of exhausts)
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