acting up. bad idle, fluctuating boost.
 

my 1999 ppp car which has no mods, has started idling badly and also not boosting very well, ie fluctuating. have cleaned the BCS today but no joy, whats the next step please guys?

Obtain and fit a known working MAF.

maf tested and failing, now need to locate new one, any ideas? also does the ecu have to be reset after fiddling with maf or when new maf goes on?

After. Try Jap Parts.