Re: Aftermarket OE replacement air filters
I'll second DD on the K&N being OK.
Over 125k miles on my Yukon with one, no issues. I clean my MAF occasionally on all my vehicles anyway but no issues. '89 S blazer went over 150k before selling with same good results.
My thirsty 2.4 has improved from a 25.3 to 27.3 avg. on the DIC with one. Same mixed driving with the same 2 drivers BTW so it has improved it. It may be even better but my foot is heavier than my wifes.
It seems to peak it's revs quicker in the 5k rpm range, no data to support that just seat of the pants. Same result in my Mustang GT, in that car I had to switch to a minimum fuel of Mid grade or better as the CAI with the K&N made it ping on Reg. fuel when you got on it hard.
Over oiling on servicing the filter will cause issues, but it's a filter for motor-heads, not the mechanically impaired IMO.
"your mileage may vary"........
"some suffer from insanity, I choose to enjoy it"
09 Malibu LS
11 Tahoe LTZ
16 Equinox LTZ 3.6
Ski Doo's & Sea Doo
02 Malibu traded
67 Malibu sold
64 Malibu sold
07 Mustang GT 3 pedals sold