Removing cat
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Junior Member
Joined: Dec 2006
Posts: 5
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Car: GTA
Engine: 350 tpi
Transmission: th700
Removing cat
Hi my question is when i remove the cat. converter and weld in a straight pipe would i have to use 3 wire 02 sensor or will just a new 1 wire work?And as for the sound level how much will it increase if i just removed the cat and leave everything stock regarding the exhaust?
Thank you wery much
Uljas
PS sorry for my bad English i am Estonian
Thank you wery much
Uljas
PS sorry for my bad English i am Estonian
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iTrader: (2)
Joined: Aug 2007
Posts: 2,529
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From: Fairhope, AL
Car: 89RS(other cars & pics in vBgarage)
Engine: LO3, 305 TBI Mildly Modified
Transmission: BakerBuilt 700R4 w/B&M Megashifter
Axle/Gears: 3.23 Auburn Pro Series LSD
Re: Removing cat
i got no cat and a one wire O2, runs fine, a 3 wire is more accurate people say i got a flow 80 and its loud
got a freind with a Z28 that has no cant and stock early style dual Z28 mufflers and its real mellow, just loud enough but not to loud
got a freind with a Z28 that has no cant and stock early style dual Z28 mufflers and its real mellow, just loud enough but not to loud
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Joined: Jan 2000
Posts: 20,981
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Removing cat
The stock 1 wire sensor will work fine. The O2 sensor doesn't care what happens after it.
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Joined: Jul 2007
Posts: 231
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From: Winter Springs, FL
Car: 2000 Z28
Engine: LS1
Transmission: T-56
Axle/Gears: 10 bolt 4.10s
Re: Removing cat
When I removed my cat it really didn't make that much of a difference at idle, but at WOT it made a huge difference. Then again I did add headers at the same time and already have a flowmaster 80 series.
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