yep you wanna replace the silver ecu for a standard one of the same type ( they have different logos on the front with coloured squares or hearts and diamonds or summat ) the other ecu is the black fuel ecu but i would doubt very much if it has been modded in any way so that should be ok to keep. next you wanna turn the boost back down to 7 psi or thereabouts and remove any dodgy bleed valves if you have one. itheres a good chance it has a dump valve too so if it has remove this and replace the boost hose it's fitted in for an un-cut one or blank off the t-piece. you'll possibly have an induction kit fitted to it too so you'll want to get a standard airbox off e-bay or summat and fit that. might wanna replace the cam and followers too cos it may have a high lift cam fitted to achieve 187 bhp. a pic of your engine bay would help too