I have for sale a REVO SPS3 controller that I used to use with my 337. It cost me $350 new, looking for $175. Heres a pic. It allows you to control boost, timing and it has a security mode that doesn't acknowledge throttle response so even if someone hot wired your car they coudn't get anywhere.
PRICE DROP $125. I forgot I still had this. Lets get this gone! PM me if interested.