Yeah BMC. Sorry. Well they still have the car and I did mentioned the CAT Sensors. Didn't get an update yesterday. The filter should not cause a problem. If I didn't tell them they probably would not have known. But I wanted to disclose all. The Akrapokic Exhaust was obvious. So whether it's any of those two aftermarket parts my thoughts are they should simply adjust whatever they think these parts may be creating a :Check Engine" light to come on. These are not radical modifications.

 

Its not the air filter the pre cat sensors have issues on this gen of car, I had an aftermarket Tubi Race on mine and it occurred and it was the pre cat O2 sensors.

 

OK...but it is an oiled filter and there have been instances of over-oiled filters causing MAF problems...not that that is what your codes are telling you though. Hope they get it fixed.

 

So the dealer had my car all week. The temp has been wildly fluctuating between high and low very quickly. So they are going to change the thermostat and housing. Hopefully that resolves this two plus week "Check Engine" light issue. Car will will be there until at least Tuesday or Wednesday of next week. Meanwhile the Cayenne is a nice to get use to ride.