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Old Apr 4, 2003 | 05:08 PM
  #1  
q4_99_vette's Avatar
q4_99_vette
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From: Aurora CO
Default Cats

If I cut off my cats and just straight pipe it from the H pipe will I lose power or is it not worth it just get a X pipe offroad?
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Old Apr 4, 2003 | 05:18 PM
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jimman
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From: Imperial Beach CA
Default Re: Cats (q4_99_vette)

Seen two dyno runs, one with long tube headers without the cats and he only picked up 8 hp. The other one was no change but just a cat removal. Not worth the risk or energy.
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Old Apr 4, 2003 | 05:36 PM
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jeanlucpicard
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From: The Woodlands Texas
Default Re: Cats (q4_99_vette)

I keep hearing people talk about the "risk" all the time as if they actually knew something. Fact is, the amount of hydrocarbons dumped into the air by your car is negligible compared to a diesel and most family sedans.

That said, I agree :iagree: that you will not gain anything but an odor that many of us more "mature" individuals have not smelled in a long pre-catalytic days time if you remove the cats. Leave the main cats - gut the pre-cats if you have them (I did on my 2001) and just run on. To gain any amount of RWHP via the exhaust, you will need to install long tube headers. :thumbs:

Just my opinion.

SAVE THE WAVE :seeya :cheers: :cool:
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Old Apr 4, 2003 | 05:43 PM
  #4  
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jimman
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From: Imperial Beach CA
Default Re: Cats (jeanlucpicard)

In CA you would have to run without plates, won't pass visual or emissions test that's the risk. A few years ago you might but those days are gone.
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Old Apr 4, 2003 | 06:35 PM
  #5  
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jeanlucpicard
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From: The Woodlands Texas
Default Re: Cats (jimman)

I guess we're lucky here in Texas. Most of the inspection outfits think a cat is one of those little furry things that meow and purr. No tailpipe sniffing in my county and no visual inspection other than to look at tires, wipers, lights, turn signals, horn and brake lights. Takes 10 minutes and $13.50 to get you out the door.

Of course, we don't hug trees here either (unless we're drunk). :jester

Gotta love this Texas air. Premium gas = $1.64 a gallon at Chevron.

SAVE THE WAVE :seeya :cheers: :cool:
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Old Apr 4, 2003 | 06:40 PM
  #6  
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From: DFW TX
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Default Re: Cats (jeanlucpicard)

Usually you can gain about 10HP from dumping the cats. A car tuned well will still pass emissions without cats.
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