We spent many many hours designing, testing and datalogging to improve the efficiency of the stock intercooler. Our testing has shown that the stock intercooler is actually quite efficient, but because of its orientation, installation and size, it cannot keep up with the heat that even a stock sled can produce - especially in the mountains where ground speeds are typically lower. Most high performance automotive intercooler applications use a ducted pathway to an air to air intercooler which is completely sealed so that any air that comes through the duct is FORCED through the fins of the cooler. Air will always take the path of least resistance which in the case of the 1100T and Z1 turbo, is mostly around the end tanks. The intercooler acts more like a heat sink rather than a true air to air intercooler. Thicker intercoolers take longer to heat soak because of the additional "mass", but will flow LESS through the fins because the thickness adds more air resistance. We realized that we could extract great efficiency out of the stock cooler in deep snow conditions simply by packing snow on the core. Our intercooler fan kit would help draw the melted snow through and further increase the stock coolers performance. This yielded very good results, but left the hood looking unfinished and did not do anything to help on days where the snow was packed. This research led us to create two hood scoops out of Carbon Fiber - one for trail/lake racing and one for the mountains. The mountain version is designed to funnel snow onto the cooler in deep snow conditions as well as forcing air through the core due to its aerodynamic shape and seal kit. This kit makes the stock cooler VERY efficient in most conditions. The Lake/Trail is designed to create a high pressure zone right above the core which rams the air through the core. We chose carbon fiber both for strength and weight - the kit literally weighs a few ounces.
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