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I picked up an inexpensive OBD2 dongle around Christmas when they went on sale and had some fun getting information out of the car. One of the things that really surprised me when I was looking at the temps was the intake air temperature seems high for what looks like a factory cold air setup. It gets even higher when stuck in traffic of course, but that's expected.
I get that intake temp probably won't match ambient ever, but 19deg C (34deg F) over ambient while operating at highway speeds seems high. Is this just the way they all are?
Checked mime during the dog days of south east Texas summer. Registered about 119F-138F. And that was when it was about 100F to 110F outdoors and various driving conditions...
From what I understand...by definition, a C.A.I. utilizes it's ductwork to pull in air from a point that precedes sources of heat. I still don't know enough about Minis to know where the air is originally being pulled from but if it's away from heat sources, it technically is a C.A.I.. Now, what I do know is that not all C.A.I.s are efficient. The more un-insulated ductwork the system has, the more opportunity the air has to absorb ambient heat while on its way into the intake, especially if it's passing close to turbos/exh. manifolds. I recently bumped the efficiency of the OE intake in my B7 A4 by adding and aftermarket heat shield over the turbo and covering the exposed ductwork with DEI Reflect-A-Gold heat barrier. My intake temps came down significantly and my plastic intake ducts are now cool to the touch even after 1hr drive.
The Justa intake opening is in the same location as the S. Up behind the grille next to the left side headlight. But it is still in the engine bay without any of the exotic acoutremons that you speak of.
To me a CAI would be more like ram air (scoops), cowl induction, NACA ducts, etc.
The Justa intake opening is in the same location as the S. Up behind the grille next to the left side headlight. But it is still in the engine bay without any of the exotic acoutremons that you speak of.
To me a CAI would be more like ram air (scoops), cowl induction, NACA ducts, etc.
Nothing exotic, cerenkov. If the point of entry is in the front, it was the designer's intention to draw in cooler air. The term "C.A.I." has been used & abused for decades and I can certainly understand how confusion may exist. The fact is that you don't need a cone filter with shiny piping and silicone couplers to meet the definition. Has anyone attempted to insulate the intake ducts on a Mini yet? Reason I ask...I hear DEI Reflect-A-Gold heat barrier is 'all the rage' on the WRX forums.
McLaren (and others) used gold foil liberally in the F1 so that leads me to believe that it works and is not snake oil.
Not sure how much people mod the non-turbos Justas other than your standard cone filter but with the turbo models I believe it to be more efficient to cool the charge air with either a better intercooler or preferably with methanol injection.
With methanol injection, I at times, can achieve greater than 25 degrees below ambient and this is AFTER it has been compressed to 18 psi. When I start pushing +22 psi it hard to get that far below ambient because I'm on the outer efficiency islands of the compressor. Either way the temperature drop is astounding and fun to watch.
