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

question on offroad xpipe and emissions testing

  • Thread starter Thread starter ChrisV
  • Start date Start date Mar 14, 2006
C

ChrisV

New Member
Mar 11, 2006
1
0
0
Mar 14, 2006
#1
  • Mar 14, 2006
  • #1
I may be getting a 01 gt and it has a bassani o/r xpipe installed with Mac dumps. Does anyone know if i would have a problem passing an emmisions test here in Illinois? Also anyone know if there's a decible test and if this would be a problem? Thanks.
 

Z28 KILR

Founding Member
Aug 4, 2001
386
0
0
Columbus, OH
Mar 14, 2006
#2
  • Mar 14, 2006
  • #2
I don't see how it could pass either test. Are you sure that IL has these tests? Ohio doesn't although have heard that they were going to start.
 

Mike97gt

it doe snot
Founding Member
Jan 26, 1999
10,633
7
89
the people's republic of massachusetts
Mar 14, 2006
#3
  • Mar 14, 2006
  • #3
this depends on what kind of tests Ill. does.

in massachusetts we have the dyno test for older cars with the 96 and newers cars getting a obd2 scan. if the scan passes you get a sticker. and a off road can pass as long as you have mil elims or a tune that turned off the cat monitor.

Z28 KILR said:
I don't see how it could pass either test. Are you sure that IL has these tests? Ohio doesn't although have heard that they were going to start.
Click to expand...

this is one of the reasons I have OH tags on the mustang. that and very very cheap insurance compared to the peoples republic of massachusetts
 
B

blackEagle

Founding Member
Dec 12, 2001
116
0
16
Calumet City,IL
Mar 14, 2006
#4
  • Mar 14, 2006
  • #4
There is no tailpipe test for 96+ cars. Since you have dumps this is not a issue for you.

In Illinois, these cars get the OBDII test which means the hook up a code reader to the diagnostic port and check for MIL code and perform a 'ready test'.

The ready test check the status of the various sensors in the emissions system.

If you have more than 'not ready' check or the service engine light is on, you fail. You may or may not fail because of the off-road pipe but, I know several people that have passed running an off-road/dump system.

There is no OFFICAL decibel test either. A ticket for 'too loud exhaust' is up to the police officers discretion meaning you may or may not get a ticket.
 
You must log in or register to reply here.

Similar threads

P
Air Fuel ratio bung location.
  • Praetorious
  • Feb 7, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
39
Views
901
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Feb 11, 2026
Noobz347
S
Fox '87 GT can't get to stay running
  • spilly
  • Mar 29, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
27
Views
654
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 20, 2026
spilly
S
S
Fuel ‘88 GT Runs Rich Cold — Fixes Itself When I Unplug Sensors (ECT, MAF, O2, etc.)
  • Sufarry
  • Nov 6, 2025
  • Fox 5.0 Mustang Tech
Replies
12
Views
760
Fox 5.0 Mustang Tech Nov 9, 2025
Mustang5L5
1
Electrical 1985 mustang gt Led conversion trouble
  • 1985fox
  • Jan 5, 2026
  • Fox 5.0 Mustang Tech
Replies
10
Views
562
Fox 5.0 Mustang Tech Jan 15, 2026
1985fox
1
1999 Mustang GT - No Start- Need help understanding the fuel pump circuit and how it works
  • 99gtGuy
  • Nov 4, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
496
1996 - 2004 SN95 Mustang -General/Talk- Nov 7, 2025
04newedge-
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?