lamnda problem , and low air flow

[nick-barnes07]

plugged vag com into my s3 today , and it came up with air/oxygen sensor intermittent , i take it that is a dodgy lamnda , and my air flow was 188g/s in 3rd gear , the car has a mrc map and a 3" downpipe , de cat , miltek cat back , and loads of other bits , it is also boosting at 15psi , instead of 20 , and the vacuum is down to 10 , instead of 30 , do you reckon this could be down to the lamnda sensor , as the maf is less than a month old , i bought a brand new one from gsf the whole unit ,

 

[shineydave]

G/S through the MAF sounds about right, you could try unplugging it and see what happens but i think your Lambda diagnosis sounds right

 

[nick-barnes07]

what do you mean , that i dont need a new lamnda , it was getting 227 g/s air flow the other week , its got a map on it

 

[shineydave]

i thought a mapped car did about 190g/s

 

[stevegti6]

it might be a lamba fault try another one but it seems down for your model it should pull more than that being a k04

 

[nick-barnes07]

i thought a mapped car did about 190g/s

my old lcr pulled around 220 g/s with a custom code map , i think 190 is a bit low for a k04 with a map on , i may be wrong ,