I've got an older model HKS turbo timer in black for sale. Asking $20 picked up in Dublin, Milpitas or Fremont.

Reason why it's so cheap is the pin connector was chopped off for use in my WRX. The wires coming from the timer (O2, RPM,Acc, IGN, IGN2, brake safety) are all present and connected.

It works perfectly. All that's needed is to plug in the corresponding pins and secure the wiring (I used electrical tape) so there is no movement.