Originally Posted by Toreador4x4
i cant explain it Rich, its just my theory. Im sure you would know better than I do, but thats what i came up with watching IDS readouts
Fair enough. I suppose that an over oiled filter could gunk up the MAF wires. I believe this even happened to me on my Lightning once.
I guess for me.. to just throw rocks at or completely dismiss a product like the oiled K&N filters based on a small issue.. is like throwing the baby out with the bath water. Yes it has it's faults and short comings. But if understood and maintained properly it can also be a great product that frees up a few ponies.
btw, when I've monitored my MAF voltages I get no spikes at all. It's been about 20k miles since I've sprayed it down with cleaner too.
I reckon if someone was to never clean thiers.. they could have that problem.
Oh and btw2, I suspect the surging could be the PCM reading a flexuating "load". As load goes up / down.. the timing and fuel will very quickly jump around. That could explain why a fella might get a surge feeling.. and not throw a CEL.
Not having the tools you have.. I'd monitor timing when this is occuring.