nice240
10-02-2012, 02:24 PM
so this is my first swap. i have a 91 s13 sr20det with a s15 t28 turbo on it. with a stock ecu .. drove it with the o2 plugged in and it idles like shit and stalls out and will barly drive. it runs better without the o2 plugged in but not 100% and the ecu reads knock sensor when the o2 is in and also whens its not in. could it just be the knock sensor? And the ecu doesnt read a bad o2 when its not plugged in. but remember when the brand new or old o2 sensor is plugged in , it runs real shitty and sketchy and can hardly drive. so im sure its not o2 sensor but maybe knock sensor or somthing else??? please help me out