So far this company has being incredible with their customer service went above and beyond what I could ask for. Compression test videos, pictures no matter what I asked for of the engine and ECU. Then told them I needed a 04 STI rear bumper and dug through their warehouse to send me every pic I asked for and hooked me up on the bumper. Their warranty is like everyone else 30 day internal parts and will exchange the ECU or rear bumper if it's wrong!! If you plan on doing the JDM EJ205 or 207 give them a call. They went out of there way to find me the JDM manual ECU for my AVCS engine.