This correlates well with my observations of the OEM airbox IAT...Generally 1-3 degrees C above ambient when moving.
I'd come to the conclusion that so-called "CAI" aren't really cold air at all unless you really focus on where the filter is placed and how air is ducted to it.
And then why would I fit one for a pitiful 2 degree C in temperature drop. I mean the coldest air it can ingest is ambient temperature.
Obviously there's more than IAT to consider when looking at modding the intake, but certainly the "cold" in "cold air intake" is a bit of a misnomer.
SRI for obvious reasons are going to be much higher IAT, as the with and without heatshield tests show.
Which left me wondering why I would want an intake other than the OEM airbox when I can fit a K+N, make some small adjustments to the airbox and have it flowing the coolest possible air at similar flow rates to SRI and CAI.
Hence no intake on mine because I am very far from convinced that I would see any gain. Sure bigger filters etc flow more air, but what good is that if the air is 10 degrees hotter? Very little, I suspect.
"Blue Meanie" 2007 Aurora Blue MPS 3 - 18x8.5+44 SSR GTX01 - 235/40R18 Michelin PS5 - 3.5" ETS TMIC - CPE stg 2 mount - HKS/CPE BPV - 2XS inlet - 2XS short shift - Corksport turbo manifold - HT 98 octane tune - Leather/Aluminium handbrake - Momo shifty knob - 7" touchscreen - JDM Mazda Retractable dashtop screen assembly - Bespoke Raspberry Pi Android based GPS/Carplay and instrumentation - 36AH reserve battery and C-TEK isolator - TEIN Street Advanced coilovers 1" drop - Superpro bushings - 220Kw/410Nm.
"Lipstick" 2013 Velocity Red MPS 3 - 18x7.5+48 Enkei RPF1 -225/40R18 Federal RS-RR - CPE TMIC - COBB inlet - CPE stg 2 mount - COBB Stage 1 98 octane tune - COBB shifty knob - 2XS short shift - 2XS turbo manifold.