That was a stock RS3 bro what were u expecting........ 400 hp is what thy make. There is no issue tuning these especially with the stock computer so stop talking out of ur ass. Its a stock RS3 computer. There has been 5 other RS3 swaps since mine and all run flawless. If u dont put a hybrid on it and build ur motor it will make the same power an RS3 will make.I've heard that there's been limited success in tuning these swaps on the RS3 ECU. The two dynos I saw were from this car and Tommyfyeah, neither of which got out of the mid 400s to the wheel. Thought OP was going to syvecs but wouldn't be surprised if the car is sitting in a giant queue at Iroz or ISC.