Totally totally disagree with that statement. The plug and plays are brilliant little ECU's and are very well liked and definiatly not over rated Why do you think they go for that amount of money?? its cause they have a brill reputation and instantly change the characteristics of the car with a quick 5 minute ecu change. just for discussion purposes have you ever owned a plug and play ecu? Chesh it really doesnt matter if you have a td04 the ecu's will fuel them correctly its the boost pressure that does. so as long as youve got the boost set under 1.2 bar id say it will be fine. best to check fueling for safety but shouldnt imagine it would make a difference 1 bar on a standard ct9 or 1 bar on a td04 IS STILL 1 BAR lol the eci's are rated for 1.3bar boost so should be safe