Cold air intake tune changes, pls help!

[Vavinesi]

I am somewhat new to tuning and by that I mean I have only messed with the fuel such as PE, Cut off, ETC. Anyways, I have a 2013 Chevy Silverado with a 5.3 LC9 motor with AFM. I recently installed a K&N cold air intake from Ford 7.3L Godzilla V8 and a Volant Throttle body spacer with the stock MAF. I am wondering if I need to change anything with the airflow or MAF? Thanks in advance!

And one more question about other car. My stock 2002 Duramax needs the stock air filter replaced and I am considering an upgrade of some sort and was wondering what others have installed in their trucks. My first thought was to just put a K&N into the stock air box. I have one in my wife's Subaru and have had one in my previous truck (gas) without problems but I keep reading about problems of oil fouling the MAP sensors. Do I need to worry about that? Would a complete cold air intake system be any better or worth the extra money? Any recommendations specific the the LB7 would be appreciated.

[CamGTP]

If the size of the intake tube matches what the factory intake tube was, then you do not have to change anything.

 

The card style MAF can be put into any size tube and changes to the tube size changes how much airflow goes across the sensor, thus changing how much fuel the engine will get based on the data it see's.

 

You can watch your fuel trims for a quick look into what has changed if anything.

[Joshua Taylor]

Cam has it right.. you should be alright but 4 best performance you should look into a tune