cat converter

f8tlbyte · 07-31-2002, 08:42 AM

whats up all. I have a question. How much will the converter affect the performance of my stang? I hear it rattling when I am idle and it makes my car sound like hell. Any help is apreciated

TwiLighTBluEGT · 08-02-2002, 12:16 AM

Take it off

f8tlbyte · 08-02-2002, 08:18 AM

I was told that if I removed it there would be a compression problem. Believe me that was the first thing I thought of.

98blueoval · 08-16-2002, 01:49 AM

Not sure what year your car is, but mine is a 98 and it had 4 conv. on it.. I removed 2 of them when I done the exhaust

f8tlbyte · 04-01-2003, 09:58 AM

Its a 89 4cyl lx conv.

04-01-2003, 02:48 PM

i have a 81 with the 3.3L i-6 i removed the cat and it runs so much better than before.

84LX89GT · 04-04-2003, 12:55 AM

You won't have any problems with an '89 Mustang if you remove the catalytic converter. I don't have any of the 4 on my car (different engine, same management system). On newer cars they have catalyst monitors that check the performance of the catalytic converters, but that is on the '96 and up cars (at least for the GT's).

As for compression, that's just how much your piston squeezes your air fuel mixture in your engine, i don't know why someone would tell you it would change that at all because it's unrelated.

It will effect the emissions compliance of your car though, and carbon monoxide and hydrocarbons will increase, but it will probably run alot better and have more power. If you have to get it emissions tested a bad/plugged converter will make it fail, just like having no converter, so at least this way you'll be getting better gas mileage and have more power with no more noise.

f8tlbyte · 04-04-2003, 09:32 AM

Thanks 84lx, Now to find someone who can do it. That thing is going bye bye. I am probebly upgrading to a newer stang soon before i have to have it tested again anyway.

07-31-2002, 08:42 AM	#1
f8tlbyte Registered Member Join Date: Dec 2001 Location: ST Louis Posts: 10	cat converter whats up all. I have a question. How much will the converter affect the performance of my stang? I hear it rattling when I am idle and it makes my car sound like hell. Any help is apreciated __________________ Boo-hoo-hoo poor me

08-02-2002, 08:18 AM	#3
f8tlbyte Registered Member Join Date: Dec 2001 Location: ST Louis Posts: 10	I was told that if I removed it there would be a compression problem. Believe me that was the first thing I thought of. __________________ Boo-hoo-hoo poor me

04-01-2003, 09:58 AM	#5
f8tlbyte Registered Member Join Date: Dec 2001 Location: ST Louis Posts: 10	Its a 89 4cyl lx conv. __________________ Boo-hoo-hoo poor me

04-04-2003, 12:55 AM	#7
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	You won't have any problems with an '89 Mustang if you remove the catalytic converter. I don't have any of the 4 on my car (different engine, same management system). On newer cars they have catalyst monitors that check the performance of the catalytic converters, but that is on the '96 and up cars (at least for the GT's). As for compression, that's just how much your piston squeezes your air fuel mixture in your engine, i don't know why someone would tell you it would change that at all because it's unrelated. It will effect the emissions compliance of your car though, and carbon monoxide and hydrocarbons will increase, but it will probably run alot better and have more power. If you have to get it emissions tested a bad/plugged converter will make it fail, just like having no converter, so at least this way you'll be getting better gas mileage and have more power with no more noise. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

04-04-2003, 09:32 AM	#8
f8tlbyte Registered Member Join Date: Dec 2001 Location: ST Louis Posts: 10	Thanks 84lx, Now to find someone who can do it. That thing is going bye bye. I am probebly upgrading to a newer stang soon before i have to have it tested again anyway. __________________ Boo-hoo-hoo poor me

08-02-2002, 12:16 AM	#2
TwiLighTBluEGT Registered Member Join Date: Jun 2002 Location: Massachusetts Posts: 157	Take it off

08-16-2002, 01:49 AM	#4
98blueoval Registered Member Join Date: Aug 2002 Location: North Carolina Posts: 50	Not sure what year your car is, but mine is a 98 and it had 4 conv. on it.. I removed 2 of them when I done the exhaust

04-01-2003, 02:48 PM	#6
digital3.3 Guest Posts: n/a	i have a 81 with the 3.3L i-6 i removed the cat and it runs so much better than before.

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