• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

punch out back half of my catalytic converters?

  • Thread starter Thread starter ty1er
  • Start date Start date Mar 24, 2011
T

ty1er

New Member
Dec 21, 2009
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0
1
Mar 24, 2011
#1
  • Mar 24, 2011
  • #1
Right now I'm running MAC flowpaths catback after a magnaflow catted H-pipe on my stock LX.

Sounds good, but its really not that loud. Maybe slightly louder then a stock exhaust. On the flip side I've thrown on my O/R H and then its way to loud for me as a DD.

So I had a funny idea, since i'm looking happy medium of loudness between the two. I am wondering if it would be a good idea if I punched out only the back half of the two cats on my magnaflow h-pipe. I'm pretty sure that the cats have two seperate sections to them like shown below.
Like this


Not sure if i have a question in here besides has anyone done this and been happy with the results? I'm thinking that it would be fairly simple to do. Might give me a little more exhaust volume, and still scrub the exhaust fumes half way?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,260
17,945
224
Massachusetts
Mar 24, 2011
#2
  • Mar 24, 2011
  • #2
For the price pf that h-pipe....punching out the cats would be the last thing I would want to do. Might as well get an off-road pipe if you are gonna gp that far
 
R

rwood126

Member
Feb 20, 2009
161
3
16
mCdONOUGH, GA.
Mar 24, 2011
#3
  • Mar 24, 2011
  • #3
If I need emission inspection I wouldn't. Just get louder mufflers
 

lancec2c30

Member
May 14, 2008
570
0
16
Washington
Mar 24, 2011
#4
  • Mar 24, 2011
  • #4
Yeah, you said an offroad was too loud. But that is an expensive mid pipe to beat the cats out of.

Look into a smaller muffler.
 
T

ty1er

New Member
Dec 21, 2009
13
0
1
Mar 24, 2011
#5
  • Mar 24, 2011
  • #5
yeah, thats whats been holding me back. the 400$ that it cost me for that catted h...

decisions....decisions.....
 

4rdnut

Member
Dec 14, 2010
188
1
16
Mar 24, 2011
#6
  • Mar 24, 2011
  • #6
I have the mac catback and catted magnaflow h-pipe, if you want it to sound better, do something to the stock engine to wake up the exhaust, better cam and aluminum heads to raise the compression and exhaust pressure.
 

jhr302

Member
Feb 11, 2007
48
0
6
Mar 24, 2011
#7
  • Mar 24, 2011
  • #7
couldnt you get like high flow cats an have them welded on or is thats whats on there ?
 

lancec2c30

Member
May 14, 2008
570
0
16
Washington
Mar 24, 2011
#8
  • Mar 24, 2011
  • #8
Magnaflow cats are already high flow.
 
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