Hi chaps no MAF on this system just a MAP and that is reading 300 plus or minus 10mB so the running of the engine is not looking too bad. Also when codes cleared and a four gas reading is taken the readings are where I would like to see them. I know I haven't done extensive checks on the mechanical running on the car but when the system short term fuel trim is at zero after a code clear and good emissions and the 300mB of manifold vac. It's not going to be the first place I look. I need to find out why the lambda is showing less than zero volts some times as much as -0.7 volts. It's not my job really but I am treating this as a learning curve.

So just to say thanks for the help so far.