Frequently Asked Questions
For the most part, the rules or guidelines for aftermarket converters are quite clear and concise. It is permissible to install an aftermarket converter in the following situations:
a. The vehicle is over 5 years old or has more that 50,000 miles on it. This applies to vehicles produced in or before 1994. For vehicles 1995 or newer, the period of 8 years or 80,000 miles applies.
b. A state sponsored inspection program has determined that the current converter has been damaged or poisoned.
c. Any situation where the need for converter replacement has been documented.
It is possible to use an aftermarket converter in a situation where the vehicle is less than 5 years old (1994 models or older) or has less than 50,000 miles on it . These situations are:
a. The catalytic converter is already missing from the vehicle and it has been properly documented.
b. A state inspection program has determined that the current converter is damaged or inoperable.
The following are examples of situations where original equipment converters have to be installed:
a. Vehicle's O.E. converter is covered under a warranty or recall.
b. Vehicle has been returned from overseas use and the catalytic converter is missing.
Some frequently asked questions regarding catalytic converters:
Q. Can a good catalytic converter be removed from a vehicle?
A. No. A good or functioning converter can never be removed from a vehicle. It is a violation that can cost the technician who does so a $2500 fine.
Q. Can pre-catalysts be removed from a vehicle?
A. No. Pre-cats are treated like any other catalytic converter and they cannot be removed unless they are defective. Pre-cat elimination converters can only be used when the pre-cat and main converters are bad and they must be approved for this type of use and need to be used in accordance with the aftermarket catalytic converter manufacturer's instructions.
Q. Can I replace two converters with one aftermarket converter? (Example: 1993 Ford F Series Pickup)
A. Only if the replacement unit has been approved for this and it is used in accordance with the aftermarket converter manufacturer's instructions.
Q. Can I install dual exhaust or dual catalysts on a vehicle?
A. No. This cannot be done unless the vehicle originally came with a dual exhaust or dual catalyst configuration from the vehicle manufacturer. It has been allowed by the EPA, however, to dual an exhaust system after the existing catalytic converter. If in doubt, it is best to check with the EPA or your local inspection program director.
Q. The vehicle has an engine that is older or newer than the vehicle or a larger engine has been installed. What type of converter, or does a converter need to be installed on this vehicle?
A. The guidelines say that a motor vehicle has to conform to its originally certified engine chassis configuration. If an engine is switched, it must be identical to the original one being replaced. It would be best to consult the local inspection station or EPA before attempting any exhaust system work.
Q. Can I replace a two-way converter with a three-way converter?
A. Yes, provided it has been tested for this type catalyst by the manufacturer in compliance with EPA aftermarket converter procedures.
*Fill out the warranty card and mail it to the manufacturer.
*Keep all invoices for six months
*Follow the catalog and technical advice
*If in doubt, contact the EPA, your local state inspector or the manufacturer.