I have a vf39, sti blue injectors, walbro fuel pump, and the cobb ots map on my 2003 wrx. Last week I put on a spt intake and everything has been good. Today I was driving, in the harsh rain, and my car started jolting in 2nd gear at about 4 or 5k rpms. My car was also idling bad, like it was going to die. The filter is not wet from the rain.