changed my ecu to a chip ecu on s1.car was running 8psi of boost on standard ecu put on the chipped ecu now only running 5psi all gears did not change any thing apart from ecus still running amal valve put on old unchipped ecu gone back to 8psi chipped ecu came of a s2 running 14 psi no problems was told s2 will run s1 and i must admit seen it my self on the track .....wtf have i done wrong