I have been speculating how to best get cool air to turbo. 2J intake has major advantages over others because its fat, short, pulls air from outside top of engine compartment, and most importantly, resides in a known high pressure zone on the car at speed. My only problem with it is the noise, which excludes it from consideration by me.
I currently run the Mountune intake, but blocked off the lower hose opening when I learned by manometer testing that where the intake hose is located, behind fog light, is a low pressure area at speed. Besides I needed that particular space for CMB brake duct hose from modified front facia intake next to fog light.
I have only used my fogs once, fog is not common here is Fla. So have no special attachment to them, could probably get by with one on passenger side driving in fog.
My thinking is to remove driver's side fog light and plumb a 2.5" intake hose from there to bottom of Mountune intake. Gets me a high pressure intake location at speed, but its close to pavement so its not going to be the coolest air available. However, high pressure to intake may be more important than a couple degrees temp. I could then try blocking the stock intake point to see if intake air pressure makes a difference in performance.
Before I do it, anyone have any thoughts about air pressure at intake point? My testing suggests cowl is running +3" water at 80 mph, behind fog facia runs about -2" H2O, intake, exterior where fog light now is runs about +3 or 4" H2O at 80 mph. Could probably run this up a little higher with a splitter and air dam at nose rather than behind IC exhaust diffuser.
Yeah, I have been wanting to get back into aero experiments anyway, next is splitter and air dam at front of nose extending to within 2" of pavement. Holding off till I get suspension modified and car height set.