Ok so im just about done on installing this turbo kit and stuff. but now im at the wireing... i have about 4 wires left to go.... this is what i dont understand!

1st i have a ep3... one of the wires is saying It needs to be put on the "ECU side "wtf is that..... and then there is another one thats saying SLC SCL something like that ... can someone please.... help me on this... Ill be posting pics on the install as well

 

If you don't understand what the ECU side of your wiring harness is, you shouldn't be doing your own wiring.

 

http://technet.ff-squad.com/wiring.obd2b.htm

Can't seem to find anything that resembles SLC or SCL. I would interpret ECu side as the wire needs to be close to the ECU, i.e. splice very close to the ECU and not in the engine room at the sensor or component.