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Exhaust Will Cats Help Kill Drone?

  • Thread starter Thread starter 7991LXnSHO
  • Start date Start date Apr 27, 2013

7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
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Kearney, NE
Apr 27, 2013
#1
  • Apr 27, 2013
  • #1
Not Felix Domesticus. A BBK 2.5" Catalytic convertor x pipe. I have an off road x pipe with super turbo mufflers and a low RPM drone that is louder than a Siamese with its tail stepped on. It actually seems quieter under a heavy foot than at cruise. Will the new cats help kill the drone and how much will it quiet it down overall?
PS The new seat covers turned out great, I will get pics. But the new driver's seat foam is taller than the piled up stuff they had under the driver's hind end before. Would a couple of bags of water softener salt on a towel in the driver's seat when I park it be a good way to get back some head room?
 

boostfrk

10 Year Member
Aug 30, 2011
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Colorado
Apr 27, 2013
#2
  • Apr 27, 2013
  • #2
Cats will help quiet the exhaust note quite a bit. With a catted midpipe and ST mufflers I believe most, if not all, of the drone would be eliminated.

Unfortunately, there are countless exhaust combinations so finding someone that has the exact setup is hard.
 
9

95PGTTech

Member
Jan 28, 2008
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Apr 27, 2013
#3
  • Apr 27, 2013
  • #3
Yes - I guess at some point I got old and vowed never to do another exhaust without at least 1 high flow cat in each pipe. In my opinion, the best mufflers out there. I've tried chambered mufflers, "glasspack" style straight throughs or bullets, turbos, H's, X's, expensive high flow Xovers, ProChambers, long tubes, mid lengths, everything. Nothing gets rid of the annoying tinny rasp sound like high flow aftermarket cats.
 

MFE92

10 Year Member
Aug 25, 2010
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Apr 28, 2013
#4
  • Apr 28, 2013
  • #4
Not even a little bit.
 

tca7291

I can see your wieners.
5 Year Member
Sep 1, 2011
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Raleigh, NC
Apr 28, 2013
#5
  • Apr 28, 2013
  • #5
I've been running open factory cats, well, stock spec cats, and the drone they put out is horrible!!! It sounds good from outside, but right around 2k rpm, it's deafening!
 

Jersey Joe

I remember blowing that Monkey's ass
10 Year Member
Nov 29, 1999
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Bloomingdale N.j.
Apr 28, 2013
#6
  • Apr 28, 2013
  • #6
I have cats with 2 chamber flowmasters and it drones pretty good. not sure how it compares to yours.
 

jrichker

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Apr 28, 2013
#7
  • Apr 28, 2013
  • #7
Chambered mufflers all drone. The only way to get rid of the drone is a little trick given to us by jerry beach

http://www.stangnet.com/mustang-forums/threads/the-drone-stops-here.651437/

Unfortunately, the pictures have disappeared, but using some imagination, it is possible to visualize the cross mounted pipes just behind the differential cover.
 

boostfrk

10 Year Member
Aug 30, 2011
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#8
  • Apr 28, 2013
  • #8
Oops, guess I was thinking more of stock cats, not necessarily high flows.
 
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