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

Mac X Pipe Installed-Few Questions

  • Thread starter Thread starter mcmmotorsports
  • Start date Start date Jul 31, 2004

mcmmotorsports

Member
Apr 12, 2004
689
0
17
Danbury, CT
Jul 31, 2004
#1
  • Jul 31, 2004
  • #1
I installed my X pipe this morning. Napa studs worked great after I went back to Napa cause they didn't thread right and then came home after I found out they are supposed to be tight threading for locking purposes.
Thanks for the heads up on that one guys.
The hardest part of this install was getting the LF O2 sensor plugged back in. Both hands just too big to fit up there.
Anyways, I made my own sensor extensions from some pigtails I got from work. Those work great with the exception of the SES light that just came on at exactly 59 miles.
Sound quality is very nice and smooth. Slightly higher pitch than other Mustangs I am used to hearing. I like the sound. Stock Cat-Back does have to go though and soon.
Performance wise, this thing pulls real strong in the upper RPM's and very smooth getting there too.
Now for my questions:

It smells like it is running kind of rich. It doesn't have the same smell that I am used to smelling from 5.0 Stangs with and O/R pipe. Is this normal?
Plus, I was able to watch my gauge go from almost full to about 1/2-3/4 of a tank in that 59 miles. Definately not normal. Is it possible that the car is running pig rich and burning all sorts of fuel now?
How can I fix this if so?
 
V

vidmaster

New Member
Jun 6, 2004
167
1
0
Brick, NJ
Jul 31, 2004
#2
  • Jul 31, 2004
  • #2
most exhausts will smell like **** for the first few days while the oils and stuff from manufacturing burn off. I would guess it could make you run rich, but I"m not sure.
 

mcmmotorsports

Member
Apr 12, 2004
689
0
17
Danbury, CT
Jul 31, 2004
#3
  • Jul 31, 2004
  • #3
No, this is a definate gas smell, I can smell that and the smell of the new stuff burning off.
 
J

joestang98

New Member
Apr 18, 2004
187
0
0
Vienna,WV
Jul 31, 2004
#4
  • Jul 31, 2004
  • #4
I was really confused by the smell when I put my BBK X pipe on a few years ago...The first 2 days the thing smoked bad an smelled strange. Raw gas and oil smell after a few days it was gone and i was relieved! I have been told that it has to do with the oil in manufacturing that burns off and also the computer relearning so that is why you smell rew gas. Give it a few days and get some MIL eliminators and you will be good to go!
 

mcmmotorsports

Member
Apr 12, 2004
689
0
17
Danbury, CT
Jul 31, 2004
#5
  • Jul 31, 2004
  • #5
K, I will give it a few days before I get too concerned. Thanks.
 

Defleshed

Satanic Mechanic
Nov 30, 2003
10,569
1
0
In Torment, In Hell
Jul 31, 2004
#6
  • Jul 31, 2004
  • #6
ohhhhhhh yeah, i forgot to mention how much of a bitch those O2 sensors were... sowwy.
 

devilman

New Member
Jun 10, 2004
15
0
0
Ft. Worth Tx
Jul 31, 2004
#7
  • Jul 31, 2004
  • #7
It smells like it is running kind of rich.
Click to expand...
mine is the way but i read that its nothing, reason is there are no cats to catch all the bad stuff. but any more info on this would be helpful. thanks
 
You must log in or register to reply here.

Similar threads

K
Engine 2000 Mustang GT - Fuel issue post-blown spark plug repair
  • kenster1092
  • Feb 26, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
290
SN95 4.6L Mustang Tech Mar 10, 2026
kenster1092
K
Door glass fastener question
  • limp
  • May 24, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
8
Views
144
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 25, 2026
limp
Fox BBK X-pipe replacement Cat?
  • TIGGER
  • Aug 26, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
7
Views
267
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Aug 26, 2025
AeroCoupe
R
bbk shorty header to mid pipe gasket
  • randyyy
  • Sep 29, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
4
Views
316
1996 - 2004 SN95 Mustang -General/Talk- Sep 29, 2025
randyyy
R
0
Engine Multiple o2 sensor codes, car runs terrible
  • 02newedge
  • Jun 12, 2025
  • SN95 4.6L Mustang Tech
Replies
5
Views
479
SN95 4.6L Mustang Tech Jul 19, 2025
squeak93
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?