Aoa.
I have been maintaining cars for many years now; there are 2 components which I consider the lifeline of the engine i.e. Air & Oil filter and I have never taken a chance. I always install OEM filters what may come.
I always change the oil filter with every oil change.
As regards to the Air filter, I get it changed every 2nd oil change. (@ 10,000kms)
As the result the engine lacks carbon deposit, and the exhaust pipe is always tan color.
Sorry to say we dont have the facility in Pakistan to check the quality of replacement Oil & Air filters.
Why take the risk........