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

DR. Gas: Cats or No Cats?

  • Thread starter Thread starter menasci
  • Start date Start date Feb 1, 2004

menasci

Member
Aug 17, 2003
640
1
16
Chandler, AZ
Feb 1, 2004
#1
  • Feb 1, 2004
  • #1
I've got my Dr. Gas sitting in my house.
Install on Tuesday!
I have two brand new carsound hi-flow cats that I got for $30/ea.
I'm in Arizona and have to pass emissions in 2 years.
We have "Smog Dogs" here.
Figured I'd put them on so I could just jave some piece of mind with Cops/Emmissions blah blah.
Questions are:
With Cats...
1. How much difference in sound?
2. How much difference in performance?
3. Should I just install the pipe and put on cats once I get caught or have to pass emissions?
4. What would you do?
 
2

2002BLGT

Well-Known Member
Dec 18, 2003
2,945
4
59
Bedford VA
Feb 1, 2004
#2
  • Feb 1, 2004
  • #2
I personally like the sound of mine with them I have ran mine with and without , its quiet enough to get you by most police without being their number one target , but it flows enough to get plenty of the power and actually seems like it has more low end grunt with than without them .
 

menasci

Member
Aug 17, 2003
640
1
16
Chandler, AZ
Feb 1, 2004
#3
  • Feb 1, 2004
  • #3
2002BLGT said:
I personally like the sound of mine with them I have ran mine with and without , its quiet enough to get you by most police without being their number one target , but it flows enough to get plenty of the power and actually seems like it has more low end grunt with than without them .
Click to expand...

Yeah, I've heard that Cats can acutally add more HP/TQ due to more back pressure.
 
9

97 Stang GT

New Member
Aug 9, 1999
33
0
0
Feb 1, 2004
#4
  • Feb 1, 2004
  • #4
GI Joe gained over 30 rwtq by switching from a catted H to an off-road Dr. Gas. I know that my cats are robbing me of TQ.

I would put the off-road on until they start emissions testing and then add the cats.
 
B

BlkDragon

New Member
Sep 7, 2003
162
0
0
St. Louis
Feb 1, 2004
#5
  • Feb 1, 2004
  • #5
I got cats welded into mine. The only negative is cost; the install was $150. Personally, I like the sound of a catted-x better, plus I don't have to worry about switching out pipes for emission and my car doesn't smell like a lawnmower.
 

menasci

Member
Aug 17, 2003
640
1
16
Chandler, AZ
Feb 1, 2004
#6
  • Feb 1, 2004
  • #6
Maybe I'll install the Dr. Gas as O/R for now.
Then I'll put the cats on later when I have to.
I'll ask the guy at the performance shop that will be installing it.
 
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