+1 agree with you sharkbait.
In the comparison of the two you showed OP. You came out ahead. The Dinan system is not all show but rather much better then the other setup. The AFI DCI will have lots of heat soak. I would just save my money and stick to stock air box that came with car or find a pure Cold air intake like Dinan.
Some people have tested these on DYNO and only thing that is better then the stock is a proper cold air intake setup like the Dinan one. There are other companies that also make them.
To OP, I myself know a BMW master tech who takes care of my car. I wonder if it is the same guy. Anyways enjoy your E92 335i.......I love mine even though I have had it for 4 years now.
Originally Posted by SharkBait
More like the AFI DCI is The Gap! Two totally different leagues. One is carbon fiber, looks amazing and actually draws in cold outside air but costs a small fortune. The other doesn't look so hot and sucks in hot engine air but is cheap.