Thanks for all your suggestions It passed its MOT today hurray!!! only just though Fitted the new catylitic converter and that seem to have done the trick - marginally But from the other posts here i think that the main culprit could have been the universal lambda sensor - this massively reduced the gases but only to double the amount - i wish i found this site a week ago My electical problems may have been a result of frayed wires in the door protection shrouds (the boot in my case) as other threads have stated. I have taped them all up and will advise on effectiveness in the next few days. The engine is burning a bit of oil and it is blowing back into the air filter but not too much Neil Wiles (or anybody who knows) Please tell me more of these coil packs running slow possibly causing the tapping noise - i would love to get rid of that tapping noise my car sounds like a diesel. Is this the standard coil and HT leads or something completely different (cost, ease of fitting etc would be helpful) Any sucesses i have i will report back into the forum Thanks for all your help PS the yeti game in the arcade is cool