Quote:
Originally Posted by brucepick
not enough exhaust in the intake air??
Hmm. Does it have EGR that pulls from post-cat converter?
Even aside from the intake air bit, I'm sure that the leak just aft of the cat messed up the O2 readings. And I bet that leak was building for a while and finally became clearly audible.
OK, I have to admit to CRS syndrome; I'm now past 55 and I don't mean mph. I"m PRETTY sure I ran it for about 40 mi. with the grill block back in and had trouble keeping LB. But I will put the lower grill block in for tomorrow's 60-mile ride up to work and we'll see how it goes. No inconvenience at all - it's sections of foam pipe insulation bundled together to fit the grill openings. Easily removable and reinstallable.
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CRS syndrome?
I'm was thinking the leak was dropping exhuast pressure, and this was causing EGR action to slow down, and throw things off. Didn't think about a post cat O2 sensor. Perhaps I should just stick to code? :P
Either way, try 'er and see!