RoadsterSport CARB CERTIFIED Midpipe with Catalytic Converter and Resonator for 99-00 Miata

This is Good-win Racing's famous all stainless replacement midpipe...in CARB CERTIFIED version. Using 457105-core which is CARB certified for use in California for the 1999 to 2000 Miata (yes, you must buy EXACTLY the right version for your year).

All stainless steel parts means years of quality performance and all the stainless parts have a lifetime warranty (catalytic converter used on all units sold in 2012 or later includes a 5 yr/50,000 mile manufacturing defect warranty on its housing and 25,000 mile manufacturing defect warranty on the internals). CARB approved and legal in California. Not for use with Racing Beat's lower rear chassis brace.

NOTE: The warranty covers MANUFACTURING DEFECTS, not road damage, damage from installation errors, or damage from misfires or other tuning errors that dump fuel into the converter, etc.. CARB approved and legal in California. Not for use with Racing Beat's lower rear chassis brace.

The slip joint in the middle of this item is your friend, lube it up and adjust length and clocking position as needed (if you ignore this note and shove both parts fully together you will make it all too short and that will cause contact with the differential).

Is your Ignition Coil weak or failing? The most common reason people buy this midpipe is that their Miata midpipe converter has failed after 50,000 or more miles. The owners too often assume the failure is simple old age, when in fact something else is failing. Failing items such as coils, fuel pressure regulators, spark plugs, valves, plug and ignition wires, and improper ECU calibrations, can cause the engine to misfire and dump raw fuel into the catalytic converter, which will cause over heating and a meltdown in the converter, and is not a manufacturing defect in the converter. If you simply replace the midpipe and don't fix the failing car then you can expect to quickly kill any replacement converter and that replacement will NOT be a warranty replacement. Therefore, please have your car professionally inspected and repaired BEFORE you install your new midpipe.

UPDATE 2021: Note that massively escalating prices for converters has resulted in Goodwin Racing dropping the labor intensive polishing of the exterior stainless that adds beauty but zero function.