hi all new to here, in the process of building up a sti as a single venue rally car. i have to fit a restrictor to the turbo to comply with motorsport regs, i gather i will then have to deal with the problem of power loss as my car is a sti v 3 i believe i cannot remapp the ecu , trying not to go to the expense of a gems or simteck type setup is there anyting else that could be done ?any help or advice would be really appreciated. many thanks