PRIDE Universal Lambda o2 CEL FixOur PRIDE Exhaust Universal 90 degree o2 Spacers lengthen the distance between the o2 sensors and the exhaust flow in order to minimize Check Engine Light occurrences. The factory ECU compares the readings from a pair of oxygen sensors to measure the effectiveness of the catalysts. When a High Flow Catalytic Converters or Test Pipes (DeCats) are used the exhaust gases are able to pass by the cat at a much faster rate, disrupting the readings. Our o2