Overheating on hot days
 

So as soon as I put in the intercooler and had to take out the foremost air duct that directs air to the radiator I began running hot. It wasn't a violent overheating or anything. It was just that on the hottest days 105* or so the car's cooling system passes a threshold where it can't shed the heat fast enough. It takes about 15 minutes for it to get there but usually at the point where I cross over a river and up the incline of a bridge I have to turn on the heater full blast to keep the needle from going up anymore. I chose the point at which I can see black between the needle and the little wings on the thermometer on the gauge, so about 3/5's up on the gauge. Anyway check this splitter I made out of 1/8" polypropylene. Came out a little better than I thought but I still have the holes pictured below.

So, have I done enough to direct the air or am I going to have to make some pieces to close these openings off?
http://www.msprotege.com/members/mel...miata/hole.JPG
http://www.msprotege.com/members/mel...ata/shroud.JPG

You have to close those openings off. The air WILL take the path of least resistance. Just continue with what you've done on the bottom.