101 kpa = 14.7 psi
do the math on the kpa readings and turn it into psi .
if you you were doing a cat back pressure test whats the psi reading you would say was a restriction ?
4 psi and above
this is 28 kpa
Ford 1600 psa engines will trip a code at this figure .
i look for 0 kpa at idle and 18 kpa max at WOT for a clean DPF with the ford PSA engines .
i am sure the figures vary , car to car etc
but they also work for me with the 2 ltr sprinter vans
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