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    Re: MG ZR 2.0 Td, 51 plate Archived Message

    Posted by Peter Rainsley on January 30, 2007, 8:40 am, in reply to "Re: MG ZR 2.0 Td, 51 plate"

    Thanks for the replies. The customer complains of a drop in performance, although it goes very well. It was 'chipped' by the previous owner, but she has been driving it for a year, and the drop in performance is only recent. David, I'm glad its not just me being indecisive on interpreting MAF outputs. On the 'scope I get a peak of 4v, but have often relied on live data under load to give a more realistic reading. We have long steep hills here where the car can generate full boost and revs. The max. I get is 1012 mgm/stroke, it gives 500 @ idle. The car does log 1222, timing governor deviation and 0216, timing device position, but I've put that down to the 'chip' running different parameters from standard. Perhaps I'm overlooking the obvious and it is a pump fault? Any ideas gratefully received,
    Peter

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