Should I remove my cats?
Thread Starter
5th Gear
Joined: Aug 2003
Posts: 5
Likes: 0
From: troy mi
Should I remove my cats?
I have a '95 Triple Black convertible LT1.
I have a power programmer, air foil, k&n filter and lid,3:73 ring & pinion.
My question is this:
Should I remove the cats?
Will there be any added performance or gas mileage?
What about the bypass throttle body coolant?
Any info would be greatly appreciated...
Jeff in Michigan at the Woodward Dream Cruise
I have a power programmer, air foil, k&n filter and lid,3:73 ring & pinion.
My question is this:
Should I remove the cats?
Will there be any added performance or gas mileage?
What about the bypass throttle body coolant?
Any info would be greatly appreciated...
Jeff in Michigan at the Woodward Dream Cruise
Pro
Joined: Aug 2002
Posts: 698
Likes: 0
From: Richmond VA
Re: Should I remove my cats? (puckhog)
Oh man.....this comes up 3 times a week I swear.
Both sides will jump in.....the permanent adolescents will say "Hell Yeah...the government ain't takin my right away to polute!" and the tree-huggers will tell you how "damaging" it is to the environment...
The truth is:
It is 3 horsepower....3 frickin horsepower.....the posers will jump on and tell you how they can feel a SOTP (seat of ther pants) difference but they are full of crap...these are the same guys that swear their Greenwood wings give them much needed downforce on their trips to the grocery store....it is 3 hp and it is a $10,000 fine if you get caught.
You decide :crazy:
Both sides will jump in.....the permanent adolescents will say "Hell Yeah...the government ain't takin my right away to polute!" and the tree-huggers will tell you how "damaging" it is to the environment...
The truth is:
It is 3 horsepower....3 frickin horsepower.....the posers will jump on and tell you how they can feel a SOTP (seat of ther pants) difference but they are full of crap...these are the same guys that swear their Greenwood wings give them much needed downforce on their trips to the grocery store....it is 3 hp and it is a $10,000 fine if you get caught.
You decide :crazy:
Race Director
Joined: May 2000
Posts: 17,101
Likes: 4
From: No more yankee my wankee, the Donger is tired!
Re: Should I remove my cats? (Bodhi)
it is 3 hp and it is a $10,000 fine if you get caught.
You decide :crazy:
You decide :crazy:
go for it.
Racer
Joined: Sep 2001
Posts: 396
Likes: 0
From: simi valley ca
Re: Should I remove my cats? (Bodhi)
I tried this on my car after I had put on the new motor, just to see how the car would run. one thing i can say is that it was very loud (combined with the flowmaster w/o the resonator) and you can definitely smell the unburnt gas. I have a 92, so i think the batch fire vs sequential might make a difference.
I've put the original cats since then, and the only thing i noticed, was that i can hear my stereo again, and no gas smell. I also replaced the flowmasters with borlas and i'm very happy w/ the results.
from my experience and from what i've heard, unless you're going to run full length headers it would make sense, otherwise i would keep the cats.
good luck,
joel
[Modified by qkvette, 4:02 PM 8/14/2003]
I've put the original cats since then, and the only thing i noticed, was that i can hear my stereo again, and no gas smell. I also replaced the flowmasters with borlas and i'm very happy w/ the results.
from my experience and from what i've heard, unless you're going to run full length headers it would make sense, otherwise i would keep the cats.
good luck,
joel
[Modified by qkvette, 4:02 PM 8/14/2003]
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
Re: Should I remove my cats? (Bodhi)
The truth is:
It is 3 horsepower....3 frickin horsepower.....the posers will jump on and tell you how they can feel a SOTP (seat of ther pants) difference but they are full of crap...these are the same guys that swear their Greenwood wings give them much needed downforce on their trips to the grocery store....it is 3 hp and it is a $10,000 fine if you get caught.
It is 3 horsepower....3 frickin horsepower.....the posers will jump on and tell you how they can feel a SOTP (seat of ther pants) difference but they are full of crap...these are the same guys that swear their Greenwood wings give them much needed downforce on their trips to the grocery store....it is 3 hp and it is a $10,000 fine if you get caught.
Oh, by the way, I don't have a wing on the car and my wife normally does the grocery shopping :D
Melting Slicks
Joined: May 2001
Posts: 2,700
Likes: 3
From: Lebanon KY
Re: Should I remove my cats? (puckhog)
well in ky there are no smog checks or nothing, so i got the main cat and pre cats cut off. i wasn't going for power gains tho, i was doing it all for the sound. with no cats, and only KBD tips, it sounds very :reddevil
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Safety Car
Joined: May 2003
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From: Vette-hid.com Lost in DFW texas
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St. Jude Donor '06-'07
Re: Should I remove my cats? (Bruthish)
I pulled my precats with 3" y pipe replaced maincat with a high flow unit .My main was plugged and pre cats were also .So I did feel a SOTP differance
Race Director
Joined: Feb 2003
Posts: 11,133
Likes: 1
From: ~The DARKSIDE Group~
Re: Should I remove my cats? (puckhog)
Leave the cats, questionable HP gains are not worth the expense of the cost to delete and potentail fines.
[Modified by Beautiful Beast, 7:13 AM 8/15/2003]
[Modified by Beautiful Beast, 7:13 AM 8/15/2003]
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: Should I remove my cats? (TA)
The truth is:
It is 3 horsepower....3 frickin horsepower.....
....On average my car was about .15 seconds quicker in the quarter after hollowing out the main cat so I would say that would be far better than a 3hp gain....
It is 3 horsepower....3 frickin horsepower.....
....On average my car was about .15 seconds quicker in the quarter after hollowing out the main cat so I would say that would be far better than a 3hp gain....
Don't waste your time, eliminate the cats when you install long tube headers.
Eric
[Modified by silver & red CE, 8:07 AM 8/15/2003]
Race Director
Joined: Nov 2000
Posts: 17,103
Likes: 39
From: stop the fun suckers
Re: Should I remove my cats? (puckhog)
I wouldnt take them off.. I gutted mine because they plugged and it was the cheapest temporary solution. I noticed no difference in performance.. the car got a tad louder.. but not what I would call a good loud.
[Modified by BluByU, 8:19 PM 8/15/2003]
[Modified by BluByU, 8:19 PM 8/15/2003]
Melting Slicks
Joined: Dec 2001
Posts: 2,437
Likes: 1
From: Gainesville Fl
Re: Should I remove my cats? (BluByU)
I am not sure if it is the same way on the lt1/4s, perhaps not since it was mentioned yo GAINED three hp. but i was told on the LS1 Ybody that if you REMOVE the cats you lose about 5 hp but if you put in high flow cats you actually gain power. makes me wonder if you gain three hp with removing the cats on an lt if you would gain even more then three hp if you put in high flow cats. personally i would like the look of just clean pipe running all the way back from my exhaust manifolds with the exception of my resonator with a stock H pipe. but putting highflow cats on an lt1 might be worth looking into
