[apk919]

Originally Posted by shoco

Great work! I notice a dip in the points of both graphs at 45 mph. This is where I noticed "reverse flow". Do you find any significance to this trough in the data points? Would you consider testing my intercooler ducts that take airflow from the side scoops and funnel it through the intercooler from the back? I'm sure many people on this forum would love to see the comparison data.

I wouldn't be surprised if there are transitions in the flow around the body that affect either flow into the scoop, or pressure in the engine compartment. That could easily lead to dips/peaks around the regression line. I'd love to have a full scale wind tunnel, but none of the F1 teams with those facilities returned my calls .

I read your solution with interest... I've been considering a hybrid solution that incorporates your side scoop ducting, but feeds it into the front of the intercooler in conjunction with the flow from the roof scoop. There's not alot of room in there though... My first mod will just be to fettle out the bottleneck and perhaps seal/smooth the flow from the roof scoop.

EDIT: Also, one of my planned tests is to measure air flow at each of the side scoops to get some idea of the potential volume of air available...

EDIT 2: Calibrating the air flow sensor... yeah, OK... it's not NASA or McLaren. But it works.