• Mustang Forums
  • Mustang Sound & Shine All

Catalytic Converter(less) and Exhaust Note?

  • Thread starter Thread starter admdavs
  • Start date Start date Mar 22, 2004

admdavs

New Member
Feb 25, 2004
369
0
0
Chicago
Mar 22, 2004
#1
  • Mar 22, 2004
  • #1
I am shopping for my new Mustang purchase, and I found a gorgeous '02 GT cnvt w/ 11K miles for around $18,500. It was cherry in all respects, except the previous owner removed the catalytic converter to get a deeper note from the exhaust. My question is does this effect the car in any way- performance or longevity??? Also the dealer told me that the service engine light is on because the converter was removed- is this true or was he bullshi*ing me???
 

streetstang03

unModerator
Dec 27, 2003
0
1
0
the dark side of the moon/home of the 1999, 2003,
Mar 22, 2004
#2
  • Mar 22, 2004
  • #2
If he took all the cats off, then it will cause the light to come on. Did the previous owner add an x/hpipe or just have new piping welded in where the cats were? w/o the cats, the car should have a little more hp. if he had an aftercat exhaust paired up to the catless midpipe, then it should add enough hp to feel a difference.
 

admdavs

New Member
Feb 25, 2004
369
0
0
Chicago
Mar 22, 2004
#3
  • Mar 22, 2004
  • #3
Two questions: one- Is there any way to turn the engine light off and two- what is an x/h pipe?
 

davergt

New Member
Dec 10, 2003
62
0
0
Mar 22, 2004
#4
  • Mar 22, 2004
  • #4
service engine soon

yes, they are called MIL ELIMINATORS and they just plug in to the now existing O2 sensors. they run about 60 or 70 bucks.
 

streetstang03

unModerator
Dec 27, 2003
0
1
0
the dark side of the moon/home of the 1999, 2003,
Mar 22, 2004
#5
  • Mar 22, 2004
  • #5
do a search on google or somewhere for x-pipe and h-pipe. it is in reference to the design of the midpipe (piping coming off the headers connecting to the cat-back). The stock midpipe is an h-pipe. it looks like an H. an x-pipe is shaped like an X. just do a search and look at some pics and u will understand. some of the x and h pipes have cats, some dont. the ones w/o cats are called off-road pipes (o/r). hope this helps!!!
 
You must log in or register to reply here.

Similar threads

Drivetrain 83’ Glx convertible C5 Trans help!
  • JacksonJared2113
  • Dec 25, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
381
Fox 5.0 Mustang Tech Dec 26, 2025
JacksonJared2113
S
Upgrade Advice on an 89 GT Convertible NJ
  • SteakDad
  • Apr 17, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
10
Views
864
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Apr 18, 2025
limp
Convertible Top Replacement SN95/NewEdge
  • MineralMan
  • Feb 15, 2023
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
3
Views
6K
1996 - 2004 SN95 Mustang -General/Talk- Jul 1, 2024
old fella 2
O
R
2014 mustang gt roush stage 3...02 sensor issues
  • RS3NLV
  • Jan 20, 2019
  • 2010 - 2014 Specific Tech
Replies
1
Views
4K
2010 - 2014 Specific Tech Feb 3, 2019
shaneyusa
Z
Leaving Exhaust Off
  • Zurk
  • Jan 21, 2017
  • 2015 - 2023 (S550) Mustang -General/Talk
Replies
3
Views
1K
2015 - 2023 (S550) Mustang -General/Talk Feb 7, 2017
15GTrob
Share:
Bluesky Email Share Link
  • Mustang Forums
  • Mustang Sound & Shine All
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?