Well a bit of a update i replaced the transistor with the Tip121 off ebay they was £0.99p buy it now for two of them .
ive bin into electronics and soldering since i was around 14 so it helps being a dab hand with a soldering iron but theres a good step by step below i
Followed this link
http://mrhightower.googlepages.com/imrcfix
any bingo it works a treat cleared p1518 fault cars got loads more bottom end and i did 50 miles of mixed driveing tonight booted it a few times here and there and only realised id forgot to put the cold air tube back into the bottom of the airbox when id had the airbox off sounded good though but prob made it get a little less mpg mind you ive put it back now still sounds nice with it in and seems to pull a tiny bit better
saved myself £191.51 if you include the 99p the transistors cost me lol
result .
only 2 faults left now P0135 and P0141
both lambda sensor faults will get my head into this asap now had a quick look at the wireing but not tested anything yet due to poor weather thought id update this as it may help others one day
