The AEM EMS is a standalone unit but Dezod has altered it to work with the current ECU for the Scion tC. With the ability to process 400 Million instructions per second on it's 32bit 200MHz processor, it is leaps and bounds ahead of the competition when it comes to raw processing power and resolution of data Designed to be powerful, adaptable, and versatile it is the latest in AEM's line of fully programmable ECU's.The following part numbers are compatible with this unit This Engine Computer also referred to as an Engine Control Module (ECM), Engine Control Unit (ECU) & Powertrain Control Module (PCM) is a guaranteed replacement for all 2006 Scion tC PCM models with a 2.4L engine size.2005-2007 Scion tC Ecm Ecu Engine Control Module. Fits the following Scion tC Years: 2005-2007 Scion tC | G | 4 Cyl 2.4L | 2AZFE 2AZFE ANT10L-ALMGKA.With the ability to process 400 Million instructions per second on it's 32bit 200MHz processor, it is leaps and bounds ahead of. Designed to be powerful, adaptable, and versatile it is the latest in AEM's line of fully programmable ECU's. If your looking for the ultimate in standalone engine management, the AEM Infinty is the system you need.$222.79 $445.58 Scion tC ECU Modules - Lifetime Warranty 89661-21500 - 2006 Scion tC 2.4L ECM PCM ECU Engine Computer Programmed & Flashed. 89661-21510 - 2006 Scion tC 2.4L ECM PCM ECU Engine Computer Programmed & Flashed. Better fuel mileage will also be experienced enabling you to enjoy the pay back of a great fuel economy 89661-21511 - 2006 Scion tC 2.4L ECM PCM ECU Engine Computer Programmed & Flashed. Parts Geek Is Your Go-To Online Warehouse For Discount Auto Parts and Accessories With these Scion ECU chips be assured of a great increase in the horse power and the torque. Our Enormous Inventory Includes More Than 10 Million Auto Parts.