On a wood chipper, the catalytic converter slowly loads up with carbon and soot until it chokes exhaust flow. When that happens the engine can't breathe, and you feel it in performance long before you ever see smoke. Here's what to watch for — and how to confirm it's the cat before you spend on a new OEM unit.
Bogs under load, slow to recover after a big feed.
Can't reach or hold full engine speed.
On newer diesels, a plugged cat often shows as a derate first.
Restricted exhaust traps heat you can feel at the outlet.
A rattling or partially melted substrate is done — rebuild it.
If the housing is intact, the converter can almost always be rebuilt — a fresh substrate goes into your original housing for about half the cost of a new OEM unit, built to meet EPA emissions standards and backed by a warranty against manufacturing defects. Turnaround is 3–5 business days on a core exchange.
Send your machine and engine — or a photo of the converter — and we'll confirm and quote.
Request a quote ☎ 774-701-6374