hey guys ,what i was trying to say was these race cars have no dash,the factory dash ,gauge cluster ,every thing is gone,we fab a alum.dash to cover the harness and stuf,kinda lookes like a nextel cup cover--we replace this with a racing gauges that are about 4 in. in dia.,oil pressure and temp with warning lights if oil is to low or temp is to high and a 5 in. recall tach-these gauges have there own sending units that go in the block but you have to leave the factory wires unpluged-that was my question ,will it affect the ecu