MY06 SUBARU WRX SILVER, DROVE IT FOR 3 YEARS, MOSTLY STOCK, EXCEPT RIMS 19`, PROSPORT EVO GAUGES, SHORT SHIFTER, SOUND SYSTEM, SHORT RAM MAF. RECENTLY AIR PUMP FAILURE AS COMMON FAULT, SO I DECIDED TO PUT IN A XFORCE EXHAUST, BLOCK OFF THE AIR PUMP, DELETE THE CEL CODE AND TUNE THE CAR, CANT WAIT TO SEE HOW MUCH THEY INCREASE IN PERFORMANCE. GOOD LUCK TO ME~~~ ^^