everytime it rains my fuse under the hood for my 06 ralliart ecu blows. sometimes i can drive 15 miles wiithout it blowing and other times not even a mile. i have no problems when its dry outside and no warnings that its going to blow. (no loss in power or sputtering). its mainlly at highway speeds. when i drive under around 30 mph it hasnt done it yet. im guessing that its not fast enough to throw water at whatever is getting wet and shorting. mods done are sri, udp, o2 sim, header, full exhaust. PLEASE HELP!

 

I would check all the weather stripping around the engine bay and also make sure that all the plastic guards under car are still there. Cause it might just be getting wet and shorting. It is kinda hard to tell not seeing it.