Ok so I've had a look on the forums can't find what I'm after....put an aftermarket filter on my blob eye wrx and the engine light is on... I was careful with maf...I have 2 mags to tryboth doing same...tried unplugging battery for 15 mins but didn't fix it... Was rough idle when first done but after a drive it's perfectly fine to drive now... Just Eml still on.. ideas?

 

Never mind guys it appears to have just gone off??

 

Out if interest what filter was it? K&N, green?

 

If you had unplugged maf then light would show on dash untill it was either reset with scan tool possibly by disconnecting battery for a while. On some cars if the fault hasn't reappeared within X amount of starts then ecu wipes the codes. I think my A-class merc was something like 50 starts before it reset the traction contol light each time it came on..

 

I went for a drive it seemed to sort the idle issue out.. think it was recalculating values maybe.. then next time i started it, it was fine

Its an Apexi Filter

 

I would say this is true