*****Updated 3.28.2012***** (Fixing Lost Images) Below is a basic guide to installing an Evo 8 ECU in a 2G DSM. This is advantageous because it allows for the flashing/reprogramming of a stock Evo ECU (which can be found for around $150) via the EcuFlash program. This program has great functionality and capabilities, rivaling (or even surpassing) DSM Link in some areas. Please note that this is just a guide, and I am not responsible for any damage caused by incorrect wiring, tuning, etc. STEP ONE: WIRING The first step is to go to Mach V forums and purchase an Evo 8 Harness Color Coded ECU Patch Harness - Evo 8 - ECU Tuning And Management. (Alternatively, you can cut/hack up your stock harness, but I'd recommend going with a plug-n-play harness if you can swing the $). Next, refer to the diagram attached for the wiring swaps that need to be made. Swap pins 8 and 22 Connect pin 32 from the EVO ECU to pin 20 on the vehicle wiring for the eclipse Connect pin 34 from the EVO ECU to pin 21 on the vehicle wiring for the eclipse Disconnect pin 87 Disconnect pin 42 Pin 40 should be left alone. Pin 92 is confirmed to leave in place. Pin 82 is called 'ignition' but has no dual in the DSM ECU. Leave this alone. Removing pin 58 stops the tach issue described on the first few pages. A/C and Normal cooling fans should/do work fine. STEP TWO: ROM DEFINITIONS Before you will be able to get a 2G to run with an EVO 8 ECU, you will need to find a ROM image with the engine immobilizer disabled. Join OpenEcu.org to obtain access to ROM downloads (Most EDM EVO 8 ROMs have the immobilizer disabled). OpenEcu.org is also where you can download (for free, legally) the EcuFlash tuning software, which allows load-based tuning and a great level of tuning flexibility. OpenEcu is a great place to learn more about tuning and the EcuFlash software. But before you can do any flashing (including the initial immobilizer flash required to start the car for the first time), you will need to buy the reflashing cable (either the 1.3 or the 2.0 cable should work, found on OpenEcu.org). STEP 3: INITIAL TUNING For a 2G, the MAF size in EcuFlash will need to be changed to 260. You will also need to make the following Maf scaling changes for the EVO 8 Rom to work properly with a 2G (courtesy of Johnnyboy55): You will also need to scale your injectors down to 400-450 (assuming you are running the stock injectors). STEP 4: TUNING Now the fun of tuning can begin. Log onto evolutionm.net or openecu.org to learn how to tune using EcuFlash. Please PM me with any corrections/questions/comments.