Hey I have 00 impreza wagon turbo ej20 yellow injectors 3" exhaust system . And recently jus change from a td04l turbo to a tdo5h with 90* inlet . The car was running fine for 50 miles or so boosting beautifully but then flagged up eml light and put it in limp mode. I have a psi3 on board code reader and its saying air mass fault . There are no air leaks in the induction side could this be a mapping jobby as the computer has jus exceeded its over fueling capabilities on its current map . cheers

Is it mapped for a td05 ?

like matt said, has it been mapped for the td05???

ECU cut due to not knowing the correct mixture for the car, will more than likely destroy your maf sensor or worse if you keep running it without a map.