Quote:
Originally Posted by M5 TT
You got a link for your Catted DPs please??
We have the same issue with our Gas turbines and seal gas analysers. If there is no flow accross the analyser it gets posioned and reads full scale. I reckon something similar is happening here. Lambdas need a flow to measure. Micro cats wont work for long unless you put a flow across them. I think you would need a feed and return so exhaust gas passes over the micro cat. Not that hard to make but like been said beofre until they can be mapped out Hi Flow catted is the easiest way to go.
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Excellent points! Has anyone tried doing the O2 simulator by itself? I could see where maybe the micro cat doesn't get enough flow up into the recess. The micro cat's initial "filter" may be too restrictive and the exhaust seeks the path of least resistance and goes back down stream. Maybe the O2 simulator allows enough unrestricted flow up to the O2 sensor to get a reading but not enough to make the DME sense emissions issues.