Removing Cats
Thread Starter
Melting Slicks
Joined: Feb 2002
Posts: 2,479
Likes: 17
From: Miami Fl
Removing Cats
How much rwhp/rwtq would a setup like mine (see signature) get from removing the cats and putting in str8 pipes w/ O-2 simulators? Any programming or code issues?
Advanced
Joined: Sep 2002
Posts: 65
Likes: 0
From: Effingham IL
Re: Removing Cats (urslooow)
I dont have a SC, but this was one of my favorite mods. I have the touring exh so noise is not an issue, it actually decreased cockpit noise/resonance at cruise on the interstate, could have been the xpipe too.
Greg
Greg
Le Mans Master
Joined: Nov 2000
Posts: 7,294
Likes: 1
From: Coral Springs Florida
Re: Removing Cats (urslooow)
Tough one... :rolleyes: Probably 8-10 RWHP...IMO:yesnod:
All I know is that it sound soooo much better and the cats are roughly 30-35 lbs. of DEAD, Restrictive weight.. :yesnod: Stop by and listen to my car...if you want :D
All I know is that it sound soooo much better and the cats are roughly 30-35 lbs. of DEAD, Restrictive weight.. :yesnod: Stop by and listen to my car...if you want :D
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Re: Removing Cats (urslooow)
I would guess 10-20 rwhp depending on the cats. On my P1SC LS1 (5.5psi) I added FLP cats to the off road Y and lost 3rwhp, but I had leaned the car a bit so I probably lost more - I didnt care because the car sounded so much better with the cats :)
Safety Car
Joined: May 2000
Posts: 4,819
Likes: 347
From: Albuquerque NM
Re: Removing Cats (urslooow)
My heads/cam car dyno'd 425 rwhp open headers, and 413 with full exhaust, including stock cats. I run the full exhaust with cats, cause this is a street machine. Why add to the pollution for maybe 15 stinking HP? And stinking is the right word, because without the cats, YOU WILL SMELL IT. Modern catylitic convertors aren't the restriction the old ones were. It's just not worth it. Your motor MAY be at the point where high flow cats would help, but I'd bet that the cats are costing you less than 10 HP. Go on a diet and remove all the unneeded junk from your car, that will do more for performance than losing the cats. :thumbs:
