Installed b18c7 standard ecu into my EK with a b16a2 drives well however when first start up I get no CEL codes and the car takes longer to return to idle once placed in neutral after accelerating but when I turn off and start back up a CEL code is up (02 sensor) and the car drives normal with the revs returning to 1,300 when placed in neutral my questions are :
-How come the CEL code doesn't pop up right away on first start up?
-after driving without the CEL why do the revs take Longer To get back down to idle?
-when driving with the CEL how come the car drives normal and revs are brought down as soon as acceleration is released?
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