Stock Cat-back
12-10-03, 11:35 AM
#1
Stock Cat-back
Is the stock cat-back really that restrictive?
Did you guys feel any HP difference after changing it out? Obviously not changing anything else that would skew the comparison.
The reason that I am asking is because I've heard that the stock cat-back is actually pretty good, and that most people change it for sound. Is this true or just a bunch of bull?
Did you guys feel any HP difference after changing it out? Obviously not changing anything else that would skew the comparison.
The reason that I am asking is because I've heard that the stock cat-back is actually pretty good, and that most people change it for sound. Is this true or just a bunch of bull?
12-10-03, 11:40 AM
#2
The Power of 1.3
Join Date: Aug 2001
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Depends on what you mean by "that restrictive." It's not terrible, but there are better things out there. HP gains can be anywhere from 5-15 hp from the cat-back, but the real gain is in turbo response. Less restriction= less spool time, and a big smile 
12-10-03, 12:01 PM
#4
Thanks guys,
The reason that I am asking is because currently I am running a mild streetport, DP & straight pipe. And I just love the way the exhaust sounds - mellow deep tone.
I am currently in the break-in-mode of my new engine so I don't know what WOT sounds like but from what I can hear it's just perfect.
The reason that I am asking is because currently I am running a mild streetport, DP & straight pipe. And I just love the way the exhaust sounds - mellow deep tone.
I am currently in the break-in-mode of my new engine so I don't know what WOT sounds like but from what I can hear it's just perfect.
12-10-03, 12:10 PM
#5
Lives on the Forum
Join Date: Dec 2001
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Go with the RB, you won't regret it. With the windows up, you will notice very little noise level difference from the stock cat-back (until transition). With the windows down, it will be more throaty with a nice burbly drone on throttle closing. With your setup, I would think you would gain a significant amount of power (10-15 rwhp).
12-10-03, 12:25 PM
#6
Eats, Sleeps, Dreams Rotary
Originally posted by adam c
I went from a stock CB to the RB dual tip. I felt a very small difference in performance. It helped, but not much.
I went from a stock CB to the RB dual tip. I felt a very small difference in performance. It helped, but not much.
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12-10-03, 03:35 PM
#8
2 babies - no back seats
Join Date: Nov 2001
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Originally posted by rynberg
Go with the RB, you won't regret it. With the windows up, you will notice very little noise level difference from the stock cat-back (until transition). With the windows down, it will be more throaty with a nice burbly drone on throttle closing. With your setup, I would think you would gain a significant amount of power (10-15 rwhp).
Go with the RB, you won't regret it. With the windows up, you will notice very little noise level difference from the stock cat-back (until transition). With the windows down, it will be more throaty with a nice burbly drone on throttle closing. With your setup, I would think you would gain a significant amount of power (10-15 rwhp).
I think they quote about 12-13 hp http://www.racingbeat.com/resultset....rtNumber=16427
If you like absolute quiet, stock is best. The RB is the next quietest
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