Howdy,
On Thu, 18 Jan 2001, Linnhoff, Eric wrote:
> On a related note, why require factory cats on cars that are supposedly
> following the "street" trends? Why not allow aftermarket cats?
ST requires the use of the factory cat? Really?
> We've already established that the local muffler shop can replace a
> non-functioning OEM cat with an aftermarket "OEM type" unit. But what's to
> prevent the installation of a hi-flow unit? Most generic "OEM type" units
> actually perform worse than the stock piece. What exactly constitutes "high
> performance" versus "stock"? Is it a measurable difference and if so, is it
> measurably comparable to an OEM unit? Where is this mythical official Stock
> vs. Aftermarket chart against which we can measure the two combatants? And
> what are the criteria? Flow characteristics? Substrate surface area?
> Cheap look and rattling heat shields? What? How do you "measure" an OEM
> cat? And if you can't positively 100% tell me what exactly constitutes an
> "exact" replacement for the OEM unit then I'm pretty much free to run
> whatever catalytic converter that I want. You (the potential protestor)
> have to prove that it's not equivalent to the OEM piece.
>
> I just love gray areas. ;^)
So you're saying that as long as the stock & aftermarket cat are grey that
its legal?
I dunno if I buy that color is the differentiator between OEM and a "High
performance" cat.
:-)
Mark
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