hi all..ive owned a 2006 wrx wagon for about 2 months, recently im getting a burning smell through the car,i had an engine warning light on and its the famous secondary air pump stuck on bank 1, also car hasent been running right, im a new subaru owner so be gentle, i was running it in 95ron, be switched to v power and was running fine..but today its been iffy again..cannot work it out..guy i bought it off said coil packs need changing..i think its a fuelling issue and not coil packs..any ideas as im falling out of love with this car already.