Just to tout the benefits of a flash ECU I'll tell you about my cousin's car. Now it's not a 3s but a DSM and the ECU he used isn't "stock" but it could be flashed with a stock tune if need be. Any way on a stock turbo his car made 260 whp and 275 wtq with nothing more than injectors and fuel pump upgrades. On stock tune and boost that car would probably be lucky to dyno 140 whp. The tunabilty makes the flash ECU a great option.