JKFORLOVERS

I have a bad Catalytic Converter and i was thinking about replacing with some bullet performace cats just two instead of four. Anyone have any idea on if this would work or not? or if it would harm my engine or cause bad gas mileage?

This is the ones that caught my eye.
* http://cgi.ebay.com/ebaymotors/2-5-C...mZ200636817762

anything would help.
-Ty-

Wannabewheeler

I think it would work fine. Guys Put those on V-8s all the time. They should be fine for a V-6.

IcyFridge

My only concern would be the O2 sensors. If you can find a way around that, please let us all know.

Why are you replacing the cats? You know that if you replace the cats when your existing ones are already functioning, it is a federal offense (I think...).

lowrpmtork

Rules for Replacing Converters
In 1986, the U.S. Environmental Protection Agency issued new guidelines for the construction, efficiency and installation of aftermarket catalytic converters. All CleanAir converters listed in this catalog have been designed, tested and manufactured to meet this policy.

In addition, CleanAir converter listed in this catalog is appropriate for use under the current requirements of the California Air Resources Board (C.A.R.B.).
E.P.A. guidelines state that replacement converters may be installed only in the following situations:

1. The vehicle is missing a converter
2. A state or local inspection program has determined that the existing converter needs replacement
3. Vehicles manufactured prior to 1996 must have more than 50,000 miles, and a legitimate need for replacement must be established and documented
4. In cases of OBD Il-equipped vehicles (1996 and later), the O.E. manufacturer's 8-year/80,000-mile warranty must have expired and a legitimate need for replacement must be established and documented.
Please note that Federal law prohibits removal or replacement of a properly functioning O.E. converter.

When replacement of the converter is appropriate (as outlined above), the E.P.A. further requires that:

1. It be installed in the same location as the original
2. It be the same type as the original (i.e., two-way, three-way, three-way plus air/three-way plus oxidation)
3. It be the proper model for the vehicle application as determined and specified by the manufacturer
4. It be properly connected to any existing air injection components on the vehicle
5. It be installed with any other required converter for a particular application
6. It be accompanied by a warranty information card to be completed by the installer.

HTH

Yankee

I run just two of those little bullet cats with an O2 sensor before and after on the V-8. Has never popped any codes.

There must be someone on the forum that has tried them on the 3.8.

I have a suggestion where the E.P.A. can stick there C.A.R.B. The day we have to submit to state gestopo vehicle inspections up here, there may be anarchy.