Tomguy, thank you, very nice test results & I like your methods too!
Greg,
I've given up on trying to devise of a away to get an air intake to area infront of the radiator as the computer and other items would need to be relocated. But where !!?? I'm not so sure about drilling holes through the firewall to get to the air intake cowl either.
I also believe that - "at speed, air passes over the front of the car at the hood seam, instead of into it. This passing over creates a lower pressure area inside the hood, at least at the air intake horn, much like the effect on the top side of an airplane wing."
On my efforts, I was just trying to get the other end of the flexihose into an area where there could be more lanimar airflow for that positive pressure in the airfilter housing hopefully so that the engine will get the sufficient air it needs rather than any forced induction. I've left the little hole on the airfilter horn open inorder to minimise this. This way I hopefully don't have to worry about altering fuel mixtures etc. or exceeding any original parameters set into the workings of the engine.
I took Tobias for a run on the freeway up the north coast this longweekend just past, to check the fuel consumption. I was worried that since the airsensor is getting cold air then the fuel mixture will be rich and hence guzzle but got a result of 216 miles on 50 litres which I'm really happy with. I kept to the speed limit of 110 kph(well, actually 70mph ~ 112kph) and only once opened up the throttle a little past 100mph. Lots of power and kept on accellerating !!
I did put a screen mesh over the flexihose opening to stop large objects that might find it's way up into the airfilter housing. I don't know if it will make too much of a difference in airflow.
I still haven't cut the tapering end off the airfilter housing but at this stage I don't like to have to relocate the air sensor in the process so I'll cut the horn just before the sensor and test for any difference - the cross sectional area there should already be greater than at the end.
Looking forward to any future test results!
Cheers,
ysmael