• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 V6 Mustang Tech

HELP! Exhaust leak 2003 V6

  • Thread starter Thread starter DeepFriedAsparagus
  • Start date Start date Nov 21, 2020
D

DeepFriedAsparagus

New Member
Apr 12, 2020
6
0
1
Portland, Oregon
Nov 21, 2020
#1
  • Nov 21, 2020
  • #1
Hi all,

I have a 2003 Mustang V6 convertible. A couple months ago, I fabricated a true dual exhaust system for my ride. It has Thrush welded mufflers. After I finished it, I had several leaks (welds=meh), so my car didn't sound very good. I used high-temp putty. It lasted about a week, and my car sounded GREAT! After the putty flaked off, it sounded like crap again. Today, I dropped everything out, smoke tested for leaks, and sealed it all with my welder. However, after I finished, the car still sounded just as crappy, EVEN THOUGH I sealed several noticeable holes. While there is no more hissing when I downshift, there is still a loud "HUMMM" in the cab like before. I feel the same loss of power, and my mufflers make a fluttering sound after I press the accelerator while parked. WHAT THE HELL IS WRONG??

Thanks for your time!

Kenji

P.S. Today, I noticed that there was condensation near the outlet of my muffler. Does that mean anything?
 

Attachments

  • IMG_20201121_141037.webp
    372.4 KB · Views: 195
You must log in or register to reply here.

Similar threads

M
2001 v6 heater return pipe leak question
  • mnky99
  • Nov 11, 2025
  • SN95 V6 Mustang Tech
Replies
1
Views
238
SN95 V6 Mustang Tech Nov 11, 2025
mnky99
M
M
Help! 2003 GT misfire when hot
  • Modular03
  • Feb 10, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
359
SN95 4.6L Mustang Tech Feb 13, 2026
Mustang5L5
N
Edelbrock 1405 Setup
  • nathantaylor200
  • Nov 4, 2025
  • Classic Mustang Specific Tech
Replies
3
Views
221
Classic Mustang Specific Tech Nov 5, 2025
nathantaylor200
N
M
Engine Unexplainable Exhaust Pop and Gurgle
  • Mrnissen122
  • Feb 14, 2026
  • Fox 5.0 Mustang Tech
Replies
12
Views
527
Fox 5.0 Mustang Tech Feb 18, 2026
Noobz347
S
07 v6 4.0 wiring issue .In desperate need of help.
  • Staycstang
  • Sep 19, 2025
  • 2005 - 2014 Specific V6 Tech
Replies
1
Views
371
2005 - 2014 Specific V6 Tech Sep 19, 2025
Noobz347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 V6 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?