daddyhaddy

hello i own a 2008 subaru impreza outback sport 2.5l and need help and advice with performance parts. i have already ordered a kn apollo intake and bola cutback. any input would be greatly appreciated

alcazar

iTrader: (2)

The intake may be a mistake, the cars do well with a DECENT panel filter right up to 400 bhp, and the intakes can cause MAF failure

daddyhaddy

maf?

alcazar

iTrader: (2)

Mass Air Flow meter.
It measure the air being taken into the car so the ecu puts the right amount of fuel in. If it's not working properly, you get over-fueling, which is bad...or underfueling leading to detonation, which is an engine killer.