[wrx+]

MapMaker50.......... I use a home made intercooler water spray when I take the car to the drag strip and on hot days, it really does make a difference about .80 sec. in the 1/4, and on hot days at a stop light its instant power instead of lull while the hot air cycles. You can try it for your self very cheaply for about $50 US or about 35 pounds. You need a 12 volt RV water pump like is used for a shower(or even cheaper is a universal windsheild washer pump-BUT you can only use that for about 3 seconds), some hose (rubber fuel line works great), a manual on/off switch, at least two nozzles ( I used misting nozzles from a garden supply shop), and a container. (my first container was a little plastic bottle to test the system). Thats all it takes, I use it on a stage 3 wrx with a top mount intercooler(APS).