2007-03-12 12:17:04 · 7 answers · asked by Anonymous in Cars & Transportation ➔ Other - Cars & Transportation
You might get a bit more performance out of it but you'llo also be putting out a heck of a lot more pollution.
2007-03-12 12:20:24 · answer #1 · answered by HULK RULES!! 7 · 0⤊ 1⤋
I believe Import Tuners or one of those smaller magazines did a test not too long ago just to bust the myth. The found the difference to be negligible, maybe 2-5 HP different on a 150 HP engine. I *think* they said they tested a used Civic that they were going to put an improved cat on it, so they went ahead and tested before, without, and after. Don't remember which month though, but it was mentioned in Sports Compact Car mag.
2007-03-12 19:31:27 · answer #2 · answered by Kasey C 7 · 0⤊ 1⤋
If it has a computer control system, and needs the reading from the O² sensors to keep the engine running correctly, removing the cat converter will change those readings and the back pressure, causing your engine to run very rich, and degrading both performance and mileage.
2007-03-12 20:00:57 · answer #3 · answered by oklatom 7 · 0⤊ 0⤋
Also, just a reminder, removing a converter is a federal offense. It may or may not improve performance. Often, too little backpressure in the exhaust system will cause you to lose torque.
2007-03-12 20:03:52 · answer #4 · answered by Aldo the Apache 6 · 0⤊ 0⤋
yes you will feel a little difference if the converter is off, especially if it is old and starting to get plugged.
2007-03-12 19:21:31 · answer #5 · answered by mister ss 7 · 0⤊ 0⤋
Not anymore.
Now-a-days they're high flow, and have very low restriction.
2007-03-12 19:39:50 · answer #6 · answered by Mr. KnowItAll 7 · 1⤊ 0⤋
yes,
i quit using cat cons, engines run better, sound better, i don't mind the black smoke that pours out.
2007-03-12 19:20:30 · answer #7 · answered by Anonymous · 0⤊ 0⤋