Like they said previously the ABS fuse is on top of the battery, so make sure you didnt stretch the wiring or something. The ABS wires come out through the separate plug on the back of the fusebox on top of the battery.

There are also two small earth points under the battery tray which are for the ABS system earths. There are two really big earthpoints and then the ABS ones are the smaller ones towards the back of the car but still on top of the chassis rail

...or you now have so much power with your pod filter the ESP is kicking in