HELP!!! VR losing power and drinking loads of juice !!!

[balboa 0]

Hiya guys...well 2 weeks ago had to change the hall sender...car was then running sweet up until about 4 days ago....loss of power and drinking alot of juice...i was thinking maybe its the lambda sensor...put car on diagnostics and never found a fault,,,have been told could possibly be air flow meter as this wouldn't show up on diagnostics....and would the car loose power and drink alot of juice if this was faulty.....any help and advice would be greatly appreciated....thanks

[dr_mat 0]

Drinking LOTS of juice would generally be the lambda (or the exhaust manifold leaking). The MAF only "trims" fuelling a little, it doesn't make a huge difference, maybe 3-4 mpg or so.