The Catalytic Converter

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Oct 5, 2003
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Just an FYI, when replacing your Catalytic Converter at least one that is carb compliant, there is a "break in" period. I think this is overlooked many times and the converter ends up going bad with in two years.

Warm up that cat first.

The best way to avoid this service issue and potential warranty problems is to include the warm-up period as a key part of your overall converter installation procedure. This heating cycle will allow for correct matting expansion.

Here are suggested steps for a proper break-in or warm-up:

  • Start engine but do not touch the accelerator pedal.
  • Idle the engine and allow it to warm up slowly.
  • After 5 minutes, increase the engine speed to 2500 RPM.
  • Hold at 2500 RPM for 2 minutes.
  • Allow engine to cool down.
  • Road test vehicle to confirm correct installation.
Next, there is a warranty card that has 3 copies and should be filled out by the shop doing the service. One copy I believe goes to DMV.


Another thing, there is really only about three companies that make these things. I had to buy a walker, then buy the flanges that match the vehicle and oem gaskets and ss bolts.

I didn't see any mention of this searching here. My apologies for any redundancy.
 
so, is that required for ALL brands, including OEM, or just the brand you bought?
 
You got a link for the one you bought?

Only link I have is to my local auto parts store ( Advance Auto) with the universal Walker converter which I found online using year make and model. This one came with limited lifetime replacement and a part # 83507. It's the least expensive one I could find. The next one available was around $500 with flanges.

Flanges are from Yota Shop. They sell a set of flanges with 2 bolts and a gasket order an extra gasket. Your going to need 10x1.25 ss metric bolts and a welder.
 
so, is that required for ALL brands, including OEM, or just the brand you bought?
I believe the break in is for all new converters.
 

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