" Make sure the O2 sensor system is working properly and at catalyst replacement time consider the big bucks of OEM. I have yet to see a replacement cat have as much material as the original.

Dennis"

Hi,

'84 Westy 1.9L (now 2.2L with 96mm pistons - GoWesty 2200cc kit)

I think that I did just the opposite.  I bought the Bosal ($109 from BusDepot - cheapest one on the lot).  So would the assumption be that this cat isn't doing its job as well as, say, the CA-qualified cats or some other, more expensive cat (you get what you pay for...)?  Also, would buying a cat with more "material" inside affect the engine performance in any way?  Buying a more expensive cat to reduce my carbon footprint is reason enough to do it, but what other cause/effects may also be a part of this decision, positive or negative?  Thanks.

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