you are definately having a maf problem. you probably messed up the wiring for the maf input and output. that's really the only wire you end up cutting, the others you just tap into. you probably mixed up the yellow and white wire, like instead of the wire from the sensor going to the input on the safc and the end of the maf signal wire from the ecu going to the output wire of the safc you probably just have em backwards. double check yourself, also double check the 2 ground wires and make sure they're on the same wire but the one closest to the ecu is correct and the other a couple inches down is correct. it's definately a HOT Wire sensor type, but you can go on apexi's website and see what your input/output number needs to be depending on what car your maf sensor is for and what engine/ecu you're running. you should be 6 in and 6 out if you're running the the KA maf sensor or SR maf sensor with a KA computer or an SR computer, if you're running a z32 maf then you need to be 2 in and 6 out still HOT Wire, i'm assuming you're running an sr20,but you need to tell us what motor/ecu's in your 92 240sx. good luck