i just bought an 02 wrx wagon. im a diesel guy so im lost. got it at an auction cheap dont no any past history. drove the car 3 times and on the third time i got on it a little bit and when it started to build boost it fell on its face. didnt die just dropped rpms liek a dead peddle. drove normal for a mile, gave it some gas to try and recreat the problem and it did made it to a friends house about a mile away driving normal parked for 5min drove 1/4 mile cut out then started sputtering and died. started it again and it idled good put it in gear had clutch about half out and it barley had enough power to move itsself. died and wont start. i visualy checked for boost leaks and changed fuel filter. any ideas would help, im new to this world thanks guys.