No bro, didn't use ecv...I think hor, if u don wan much hassle, don mod the ori pipe but add a pipe from the extractor -> downpipe and install the ecv.. So normal drive the air flow through silencer and muffler, and when u wan Good respond just open the ecv so the air direct flow from extractor->turbo->ecv installed pipe, thus the sound should be like track car...anyway, is good that I decat and upgrade bigger piping to reduce back pressure