Ok new cap fitted 310cc injectors and chip back in running much better this .code o2 sensor limit surpassed i had forgot i had this fault before fitting charger i presumed i cured it by buying a new bosch lamda.obviously hadnt and this is why im running rich even more so with bigger injectors etc.lambda plug on car loom has 4 wires the yellow that connects to pin 42 in ecu i think is the ground for sensor has corrosion on terminal.im thinking as the lambda detects a lean mixture the voltage would be low and if rich it would be high.as ive got a corroded terminal id have no voltage to sensor s