After testing the Airaid, aFe, and Dual Intake Options, with both datalog and track comparisons, this is the synopsis I came up with:
1.) Stock car or "starter pack" and tune - Add drop-in filter with stock intake. You won't get much gains with an open filament intake, even though I have a write up showing that the powerband extends out to 6300, you're up there for MAYBE .1 seconds of each shift IF your tuner has you shifting that high, and it will require VCT changes otherwise you will still lose power at 5600 with stockish VCT.
2.) Basic bolt-ons or E30 - Until you start peaking out your WGDC (while ensuring no boost leaks), you still may not benefit much from a CAI. Once tapped out on stock turbo mods, we've seen the Airaid/aFe intakes getting around a 7hp gain over the stock airbox, as the air demand overtakes the small OEM snorkel and the turbos start to fight each other to breathe. The open filament intake helps this, but you still start to struggle to breathe above 5500 rpm when 430+ hp.
3.) Full mods, 90%+ wgdc - When you reach this point, you're going 460+ with XDI pump, E30/E50, downpipes, intercooler, etc., we have seen the need for the Dual Feed Intake options (Hennessey, J2, EPP) really come alive. With our own car, we notice an 8% drop in WGDC from the turbos not having to fight each other and an almost 4hp peak gain over the Airaid/aFe intakes.
In my professional opinion, stay with a drop-in filter until you get serious about mods. If you want the flashy intake and some suck suck noises, find a used Airaid/aFe (Airaid also the manufacturer for Roush and LMS intakes), or you can jump to the EPP intake for a one-and-done, but don't expect much of a power difference until full tilt.
For the record, I bought my Airaid intake used on eBay for $100 shipped to my door. If you aren't looking to go 11s or faster, that $450 difference can be easily put toward better tires or to save for an HPFP.
Another perk to the Dual Intake, it allows you to service the transmission fluid without removing anything top side of the engine
