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

Q's about LT header, and sniffer test-Ohio resident needed

  • Thread starter Thread starter mity2
  • Start date Start date Mar 17, 2004

mity2

I like Pro3 and all I got was this crappy CT.
Jul 24, 2003
2,872
3
48
StateCollege PA
Mar 17, 2004
#1
  • Mar 17, 2004
  • #1
Well, i'm thinking I'll do that sometime this year, but I'm moving to Ohio sometime this year as well. Now, couinty I'm moving to(Lorain county) has a emission test with sniffer test from what I'm understanding, and I know with long tube header, you'll lose cats. Now, can I pass sinffer test with LT, and if not, anyway I can add cats so that I'll pass, or should I just go with BBK tuned length header(when ever it came out)??
 

StangJonGT

Founding Member
Jun 2, 2001
1,329
0
36
Seattle
Mar 17, 2004
#2
  • Mar 17, 2004
  • #2
You *may* pass a sniffer but you won't pass a visual. The trick with long tubes is not whether or not you can install cats, but how far away the cats are from the block. Catalytic converters only work when operating at a certain temperature; you may have noticed your car smells different when running cold. The problem with LTs is cat placement is too far from the engine, preventing "light off", or catalytic converter warm up, therefore preventing the cats from producing the appropriate chemical reactions they were designed for. LTs will NEVER be emissions legal, for this reason and this reason alone. You can *try* and place them on your exhaust piping (mid-pipe) for a visual inspection, but you are rolling the dice with a sniffer.


Jon
 

mity2

I like Pro3 and all I got was this crappy CT.
Jul 24, 2003
2,872
3
48
StateCollege PA
Mar 17, 2004
#3
  • Mar 17, 2004
  • #3
so i probably should go with BBK shortie then.....
 

StangJonGT

Founding Member
Jun 2, 2001
1,329
0
36
Seattle
Mar 18, 2004
#4
  • Mar 18, 2004
  • #4
Yes.
 

Marc99GT

Founding Member
May 20, 1999
1,012
0
0
Long Island, NY
Mar 18, 2004
#5
  • Mar 18, 2004
  • #5
mity2 said:
Well, i'm thinking I'll do that sometime this year, but I'm moving to Ohio sometime this year as well. Now, couinty I'm moving to(Lorain county) has a emission test with sniffer test from what I'm understanding, and I know with long tube header, you'll lose cats. Now, can I pass sinffer test with LT, and if not, anyway I can add cats so that I'll pass, or should I just go with BBK tuned length header(when ever it came out)??
Click to expand...

You will easily pass with longtubes and a Cat-H pipe. I ran Mac Long tubes with the Cat-H pipe, with 42 lb injectors, Vortech Supercharger @ 12 psi & passed the dyno test each time for 2 years. The V8 definitely puts out enough heat to heat the 2 cats. The operating temperature is about 1400 degrees and they will reach that quite easily with a little hard driving.
 

mogs01gt

Founding Member
Jul 22, 2002
3,113
30
119
Ohio
Mar 18, 2004
#6
  • Mar 18, 2004
  • #6
No you wont pass the visual test. If you are really concerned with Echeck. Get shorty headers and save the stock H pipe. When you go do your testing, slap the sucker back on. Takes 15 minutes.

Nick
 

mity2

I like Pro3 and all I got was this crappy CT.
Jul 24, 2003
2,872
3
48
StateCollege PA
Mar 18, 2004
#7
  • Mar 18, 2004
  • #7
mogs01gt said:
No you wont pass the visual test. If you are really concerned with Echeck. Get shorty headers and save the stock H pipe. When you go do your testing, slap the sucker back on. Takes 15 minutes.

Nick
Click to expand...

I heard in the past somthing about loophole in OH echeck. something about if you fail, and you prove that you try to fix it, and you fail yet again, it'll be omitted or something like that.
But Otherwise, i guess I'll have to go with shortie. I mean BBK one should make some power after all, even tho not LT header
 

mogs01gt

Founding Member
Jul 22, 2002
3,113
30
119
Ohio
Mar 18, 2004
#8
  • Mar 18, 2004
  • #8
That isn't entirely accurate. I had a 78 bronco that they tried to make me have it be emissions legal. yes a 78 bronco that didn't even come with Cats or emissions equipment from the factory. I did a few things with the carb and ran lower octane gas with alcohol but it wouldn't pass. I went back a few times. Each time they said it has to pass or we wont put plates on it. So I continued to buy temp plates for it.

What I do now is register my car in a different county. I will continue to do so until I get caught or E check disappears. Its a 'Kiss Me''Kiss Me''Kiss Me''Kiss Me'ing waste. doesn't do anything for anybody but waste an hour of their time and money.]

Nick
 
You must log in or register to reply here.

Similar threads

R
What's it Worth? 1997 Cobra, a ton of mods and restoration
  • riored97snake
  • Jun 18, 2026
  • What is it Worth?!?!?
Replies
2
Views
162
What is it Worth?!?!? Jun 21, 2026
riored97snake
R
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
807
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 20, 2026
spilly
S
Progress Thread Progress Thread- From6to8's 1994 Cobra Supercharger install
  • from6to8
  • Sep 25, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 20 21 22
Replies
420
Views
9K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 6, 2026
from6to8
S
5.0 Rebuild
  • smittys7up
  • Nov 29, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
8
Views
565
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Dec 20, 2025
Noobz347
Intended Headers and Trans, questions about fitment
  • from6to8
  • Aug 6, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
22
Views
2K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Feb 6, 2025
from6to8
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?