So, for those of you who have no idea about this kind of stuff like myself... before a bunch of reading and what not... e-mailing back and forth with DIY... I have a list of what you'll need to build your own ecu for the COP 3rz!
1 x MSPNP and DIYPNP IAT Sensor Kit - Steel Bung (PNP_IAT-S) = $29.00
1 x MegaSquirt Tuning Cable (DB9 Straight Thru) (TuneCable6) = $5.50
1 x USB to Serial Adapter - Works with TunerStudio! (USB-2920) = $22.50
1 x 10' MegaSquirt Wiring Harness (MS1 / MS2 / MS3 Ready) (MSHarness) = $79.00
1 x EBC Electronic Boost Control Solenoid Kit (EBC_Sol_kit) = $47.00
1 x JimStim v1.5 MegaSquirt Stimulator w/ Wheel Simulator -Unassembl (jimstim-k) = $59.00
1 x MegaSquirt Boost Control Mod-Kit (MK-Boost) = $7.50
1 x MegaSquirt PWM IAC Valve Control (TIP120) 'Mod-Kit' (mk-PWMIAC) = $7.50
1 x MegaSquirt Pullup Resistors 'ModKit' (mk-pullup) = $2.00
1 x MegaSquirt-II Programmable EFI System PCB3.0 - Kit w/ BLACK CASE (MS230-K) = $279.00