Maf sensor problem

[b5zay]

I got a 1.8 AWD b5 and when I have my mass air flow sensor plugged in the car starts then dies or starts and runs and pushes zero psi and if I have it unplugged it pushes full boost(8-9psi) but after about 4200 rpm the car has no power and still pushes full boost but no power, what the hell is going on, I tried different maf sensors and different ecu's and it does the same thing. Please help lol

[b5zay]

And the wiring is good I checked that many times


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[Seerlah]

How you know what boost you are running? 8-9psi with no power just seems like an oxymoron.

Boost leak test, make sure all wires for MAF are not compromised, fix all exposed and/or corroded wires, report back.