How restrictive
04-04-2002 | 01:17 AM
#1
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Joined: Nov 2001
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From: Cypress, SoCali
Car: 2006 Tacoma X-Runner
Engine: 4.0L DOHC V6
Transmission: 6-Speed Manual
Axle/Gears: 3:15 LSD
How restrictive
How restrictive is the cat back on our cars? I mean like the cat itself, the piping, and the muffler. Would I notice a difference when I get a hi-flo cat, 3in tubing, and an 80s Flow? Any noticable performance gains?
04-04-2002 | 08:13 AM
#2
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Joined: Jan 2001
Posts: 7,164
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From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
The cat will be the most restrictive I would think if never replaced, the manifolds and y-pipe are more restrictive. The pipe diameter of the cat-back isn't too bad for a stock motor.
04-04-2002 | 12:24 PM
#3
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Joined: Nov 2001
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From: Cypress, SoCali
Car: 2006 Tacoma X-Runner
Engine: 4.0L DOHC V6
Transmission: 6-Speed Manual
Axle/Gears: 3:15 LSD
I know about the manifolds and y-pipe. They are just really restrictive but I have to get the cat all the way back done before I can get the new headers and y-pipe on.
04-04-2002 | 12:34 PM
#4
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From: Dixon, IL
Car: RS
Engine: 305
Transmission: 4L60
Axle/Gears: 3.42
I was glad I replaced mine, although you have a slightly bigger stock system than me (you are also putting out more hp)
the butt-dyno really liked it
the butt-dyno really liked it
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