I have a 2007 3.0L 2wd ford ranger and this afternoon I was putting in a cone filter because I can’t find anywhere that sells cold airs for the 3.0s when I put it in I have an adapter for the maf and then I put it in and it starts for a second then it bogs out and dies but when I put in my stock air box with the stock filter it starts and runs fine. Any ideas on what my issue could be I’m think too much air but I don’t know.

 

Welcome to the forum

1986 thru 2011 Rangers all came with Cold Air Intakes
If you take out your air filter and look at the bottom on the air box you will see the air tube that goes forward to the Rad support, there is a hole in the rad support so the air box is pulling in COLD AIR from behind the grill
This setup has 200% air flow so 100% more than the engine can use, this allows the air filter to get 50% dirty before it would effect engine operation

A cone filter should be 125-150% flow, so needs to be cleaned more often, and it needs to be put INSIDE the air box and sealed inside so its pulling in COLD AIR, if its in the engine bay then its pulling in WARM AIR
In vehicles that come with cone filters they are in an "air box" that is sealed when the hood is close, and have an air tube in the box that runs thru rad support to pull in cold air from behind the grill, so same setup as you already had

Cone filters will work but they can create turbulence if located too close to the MAF sensor
Rule of thumb, if you can HEAR air flowing into the engine when you REV It then that IS turbulence and BAD for performance, sounds cool but is NOT cool, lol

 

As RonD said, return the cone filter and keep the stock set up.