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[Mtbcoach]

At this point, there is no "hard" data where someone ran a dyno in an FJ with stock air box, then another run with a K&N drop-in, then a 3rd with the TRD CAI. There are some posted dyno pulls with CAI (TRD and other) vs stock but they are different vehicles, and different configurations (MT and AT).

So, at this point, the "evidence" is only anecdotal. There are a couple posts of FJ's with Scangauges who are running snorkels with K&N drop ins vs TRD CAI showing very similar intake temps (1-2 degree differences) running together, on the same trail, sharing the numbers via CB. But, this only has bearing on the CAI value, not the "volumetric" value/differences between the two.

One thing of note, if it is a "value" to you, the TRD CAI does give a much different engine "tone" which many like. The K&N does not give this "feedback".

Personally, I run the K&N with a snorkel, in my opinion, the best CAI you can run. I can't see/rationalize the increased cost of the TRD CAI for what may be a minimal performance increase and some more engine noise at an additional cost of $350...