ok ive got a 87 mustang and for some strang reason it wants idle at 1500rpm and when i lower it to at least a 1000rpm then put it in gear it dies. it came from new york and a custom intake i really dont want it to stay at 1500rpm cuz then wats the point in trying to save gas if its revving this high. any suggestions would be great. any kits for getting rid of the gap between the radio and the transmission hump?