can a hollowed out cat effect starting at all?
07-27-2005, 09:39 AM
#3
no, on odb 1 there are no post cat O2's and odb 2 should ignore post cat O2's on startup since...
they are cold (cold = not working properly)
But your 90 is ODB 1 I think.
But your 90 is ODB 1 I think.
07-27-2005, 02:02 PM
#5
AudiWorld Super User
Thread Starter
what about backpressure?
I know the cat on my 88 is hollow and also not sealed right....just curious if that can have any effect on why it starts so poorly
07-27-2005, 05:10 PM
#6
Unless it's cloged, it should not matter...
on my 12v I have both cats "freeflow" :-) and the only notacible effect that I see is that the engine is a bit more peppy. One more thing is that between 2k & 3k rpm the sound tends to resonate in the 2 chambers.
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