QUOTE(dares @ May 8 2014, 04:46 PM)
Well this is not Australia....In malaysia you can hardly get anything less than 30 degrees celsius at the intake manifold when cruising (I assume the inlet temp in the video is the same as intake manifold temp). In traffic jam the intake temp can easily go over 50-60 degrees celsius (Preve I heard goes up to 75 degrees lol), the ambient temp alone can go up to 42 degrees instead of the chilly 19 degrees in NSW.
It's not the lack of cold air I wanna address....it's the presence of very hot air

if you watched the whole video, they managed to reduce 10-20+ Celsius. no gain. lol.
inspira goes up to around 70c too for my car, especially black bonnet under hot sun

for white car, iinm 2-3c cooler. (yes had fun with the infrared thermal gun on one weekend

)
in the video iinm their temps were about 40-50+c in the engine if no heat shielding were done
after heat shielding done/cai etc they can maintain 20c+
SIGNIFICANT temperature drop. no gain.
only until the headlamp remove CAI connect all the way in front of the fan, they gotten 4 ponies

summary/tldr:
for modern car, i think hot air isnt that huge of a deal especially on a car that is sub 200 horsie, city driving, point a to b
but if you're chasing dyno charts and stuff, then yeah by all means go for it.
in fact if you look at the 4b10 design, they can EASILY have the damn intake super short and avoid the engine heat altogether, but they chose not to and have a stupidly long travel length on the snorkel/filter box.
the reason is due to the VVT (4b10 MIVEC is basically same as toyota's DVVT lol) requiring some form of air pressure/turbulence created via the snorkel/filter box travel path so that it may mix fuel better prior to combustion especially during low load/low rpm/idle phases. something like squeezing a water hose to get higher water pressure instead of having it freely flow. (if interested may dig up the LYN inspira thread or look up mitsubishi technology pages/documents like this:
http://www.mitsubishi-motors.com/en/spirit...rary/mivec.html )
that's why people lose torque (especially the low end/power band) or even ponies instead of gaining when putting in drop ins, CAIs etc for these kinda car.