Nothing fancy, but I just did a thorough job of exit ducting out of 3 of my 4 coolers. Intercooler, oil cooler, right coolant radiator. I didn't do an exit duct out of the left rad due to it's close proximity to the turbo. I just couldn't
realistically make anything that would fit and be efficient and I figured it wouldn't hurt to have a little airflow over the turbo.
Here's a pic of the right rad exit duct. Rather crude but it works.
Here's a pic of the cowl exit louvers that seal to this duct
Here's the small but challenging intercooler. Unfortunately I don't have a pic right now that shows the backside of this exit duct where all the work was. But I made it from aluminum because of its very close proximity to the turbo. The
crude fiberglass box seals tightly to the face of the intercooler and to the exit. So air takes a bit of a convoluted route.
Todd -- sorry for the long winded reply, now my fingers are sore... :-)