• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Exhaust Cat backs for 98 GT...looking for guidance

  • Thread starter Thread starter JDubs
  • Start date Start date Mar 18, 2013

JDubs

New Member
Mar 18, 2013
1
0
1
Vineland, New Jersey
Mar 18, 2013
#1
  • Mar 18, 2013
  • #1
I'm looking for a cat-back system form my 98 GT. My ride is more or less stock, and has 65K original miles. Because it's a convertible, and because of my stage in life, I'd like an exhaust that sounds good, but not too noisy. I think this would disqualify Flowmaster's American Thunder system.

For some reason, Flowmaster does not offer the Force II exhaust system for the 98 GT...which is what I would opt for if I could. I have no idea why they don't offer it. Is there a reasonable substitute? Fit and finish is important, and I want to avoid 3.0' (or larger) outlets...the car is basically stock, after all.

Thanks!
 

Jhussey1280

Member
Jan 31, 2012
185
4
19
New Pal, Indiana
Mar 19, 2013
#2
  • Mar 19, 2013
  • #2
I have a 98 GT convertible and I switched from Flowmasters to SLP Loudmouth and I love them. I think they might be too loud for what you want though, but I dont think the Flowmasters are loud at all so I'm not sure what kind of sound you're after. Maybe check out a Borla or Magnaflow, though neither brand I really like. Pypes might be a way to go. Or just leave it stock.
 

fiveoho

15 Year Member
Apr 28, 2005
1,958
16
69
TN
Mar 19, 2013
#3
  • Mar 19, 2013
  • #3
magnaflow catback (not the magnapacks) paired with an off road mid pipe

or

magnaflow magnapack catack with the stock cats and mid pipe


both should sound great but not overly noisy. fit and finish is one of the best.
 
J

JimTMich

Member
Mar 20, 2003
161
0
16
Michigan
Mar 19, 2013
#4
  • Mar 19, 2013
  • #4
I bought my 04GT with Borla Stingers on it. Silly loud. So I put on a Ford Racing cat back. That was louder than stock, but not by much. Then eventually went to MRT high flow catted H Pipe. Nice muscle car sound. Probably a little too loud. The Ford Racing is nice in that it has two different sized mufflers, just like stock, so you won't get "the drone".

So there is your 2 step plan. Ford Racing cat back, and if it's not loud enough, then add a high flow cat and that will bring the volume up.
 

Bob Hughes

Member
Dec 26, 2011
349
17
19
Southamptonl, NJ
Mar 20, 2013
#5
  • Mar 20, 2013
  • #5
If you're planning on keeping cats on the car the American thunder is a great choice. I had them on my 98 back in the day....deep tone....not obnoxious....my current setup is s little loud for me but after almost the $1000 investment I'm not changing it again
 

72 fastback

Member
Apr 4, 2006
146
3
19
Hamden Ct
Mar 21, 2013
#6
  • Mar 21, 2013
  • #6
I've been thinking about the delta force myself for my 02 conv. Just want a little exhaust note.
 

bhuff30

Founding Member
Dec 11, 2001
6,037
35
129
Olathe KS
Mar 21, 2013
#7
  • Mar 21, 2013
  • #7
I have an offroad H and stock cat back and it is plenty loud for me. It sounds nice all around because ford did the hard work of tuning the exhaust system already. I just removed the major restrictions in the middle.
 

84Ttop

They make new pistons every day, so why worry?
5 Year Member
Jul 2, 2009
5,222
3,254
204
South Jersey
Mar 22, 2013
#8
  • Mar 22, 2013
  • #8
The flow master stuff fit and finish wise is incredible, quality second to none and on my 96 GT vert they sounded good, not to loud and no drone on the highway with the stock catted H pipe
The magnaflow also fits very well
The pypes as mentioned earlier in the thread are junk, fit and finish is the absolute bottom of the barrel!
 
You must log in or register to reply here.

Similar threads

C
98 gt fuel pressure issues
  • chasecollier1984
  • Jun 2, 2026
  • SN95 4.6L Mustang Tech
Replies
0
Views
78
SN95 4.6L Mustang Tech Jun 2, 2026
chasecollier1984
C
3
2006 v6 exhaust conversion
  • 302Rich
  • Jun 10, 2025
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
0
Views
165
2005 - 2014 S-197 Mustang -General/Talk- Jun 10, 2025
302Rich
3
L
Is catback worth it over axle backs?
  • Lorencarson
  • May 15, 2025
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
2
Views
689
2005 - 2014 S-197 Mustang -General/Talk- May 15, 2025
89ripper
B
Saying Hi
  • BriansNSane
  • Dec 20, 2025
  • The Welcome Wagon
Replies
5
Views
290
The Welcome Wagon Dec 21, 2025
BriansNSane
B
0
V6 to V8 Swap info
  • 02_2v_Curtis
  • Jan 11, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
715
1996 - 2004 SN95 Mustang -General/Talk- Jan 11, 2026
02_2v_Curtis
0
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
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?