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  • SN95 4.6L Mustang Tech

Ho long do aftermarket exhaust parts last?

  • Thread starter Thread starter shallowreef
  • Start date Start date Apr 7, 2008

shallowreef

New Member
Nov 3, 2005
0
1
0
illinois
Apr 7, 2008
#1
  • Apr 7, 2008
  • #1
I mean cats and mufflers? I think my mufflers are on there way out and my cats are throwing codes.

The mufflers are 3 years old and the cats are 2 years old.

How long do they last? Do they need to be replaced ever?
 

streethorse

15 Year Member
Oct 8, 2005
1,042
6
58
Dallas Texas
Apr 7, 2008
#2
  • Apr 7, 2008
  • #2
Are you getting code 153 ? If you clear the code does it come back?
 

shallowreef

New Member
Nov 3, 2005
0
1
0
illinois
Apr 7, 2008
#3
  • Apr 7, 2008
  • #3
I'm not sure what the code is exactly i have it on the service ticket at home i think. I tried disconnecting the battery before to get rid of the check engine light but it came back on like 2 days later. It use to be on for like a week and then go off for and it was the cats then too.
 

streethorse

15 Year Member
Oct 8, 2005
1,042
6
58
Dallas Texas
Apr 7, 2008
#4
  • Apr 7, 2008
  • #4
I started getting #153 a couple of months after adding my bassani w/cats.
It would come and go like yours. I replaced the 2 front O2 sensors and changed back to my stock cai w/K&N instead of the MAC cai. After 1 month no light.
The stock H-pipe has the O2 sensors right in the 1st cat so they heat up
faster than high flow cats.
 

shallowreef

New Member
Nov 3, 2005
0
1
0
illinois
Apr 7, 2008
#5
  • Apr 7, 2008
  • #5
I'm planning on pulling the cats out soon anyways and running straight pipes and mil eliminators so that should end the problem right away.

The reasn i ask about the mufflers is that i think they sound a little rattley instead of that deep throat sound that i remember them having when i first put them on. So i was wondering if they might be shot. People tell me that my car sounds good but i just don't like that little bit of tinny rattle that i hear.
 

streethorse

15 Year Member
Oct 8, 2005
1,042
6
58
Dallas Texas
Apr 7, 2008
#6
  • Apr 7, 2008
  • #6
Yeah, mufflers rot from the inside out.
 

Brute03

Member
Mar 20, 2006
232
0
16
Apr 7, 2008
#7
  • Apr 7, 2008
  • #7
ummm... i think the best place to start would be getting the codes read....
 
S

silver4.6

Founding Member
Apr 11, 2001
514
0
16
In a little concrete bunker.
Apr 8, 2008
#8
  • Apr 8, 2008
  • #8
I've got a flow master exhaust and my left muffler starter to rattle about 3 months ago, it's driving me crazy. I need to find a part # for it so I can have it replaced. 40k miles and it's done.... I thought they had a million mile warranty, I guess I'll have to look into that.....
 

shallowreef

New Member
Nov 3, 2005
0
1
0
illinois
Apr 8, 2008
#9
  • Apr 8, 2008
  • #9
So i'm not crazy when i think my muffler is on its way out?
 

04fullitgt

I shower with poo
Nov 13, 2006
0
0
0
Crest Hill, Illinois
Apr 8, 2008
#10
  • Apr 8, 2008
  • #10
Have you checked your muffler bearings



 

shallowreef

New Member
Nov 3, 2005
0
1
0
illinois
Apr 8, 2008
#11
  • Apr 8, 2008
  • #11
huh?
 

04fullitgt

I shower with poo
Nov 13, 2006
0
0
0
Crest Hill, Illinois
Apr 8, 2008
#12
  • Apr 8, 2008
  • #12
wha?
 

jivepepper

Founding Member
Jun 19, 2002
776
5
18
Under a Sombrero. in WV.
Apr 8, 2008
#13
  • Apr 8, 2008
  • #13
My macs are 7 years old. They rattle pretty good. I plan on replacing them next month.
 

mustang50v8

Member
Feb 4, 2003
548
3
18
847 Chicago Burbs
Apr 8, 2008
#14
  • Apr 8, 2008
  • #14
silver4.6 said:
I thought they had a million mile warranty
Click to expand...


the million mile warranty is k&n air filters
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,265
17,952
224
Massachusetts
Apr 8, 2008
#15
  • Apr 8, 2008
  • #15
I have a 4-year old flowmaster cat-back on my car

57K miles, and driven in salt and slush and they are still silver and rust free.
 

joshheat25

Member
Nov 8, 2004
871
0
16
Delaware
Apr 8, 2008
#16
  • Apr 8, 2008
  • #16
My Stainless Steel bassani Cats went to **** after 3 years, The mufflers and The rest of the system is good with the exception of one other bolt that is messed up.
 

shallowreef

New Member
Nov 3, 2005
0
1
0
illinois
Apr 9, 2008
#17
  • Apr 9, 2008
  • #17
My SLP aren't rusting they just don't sound as good anymore. Once i hear how loud my car is once i pull the cats i am going to debate either going with LM2s again or Powerflos. I know for a fact that LM1s on a O/R X-pipe do not sound good at all. way to crackley and poppey.
 
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