Hi

Have an '02 WRX. What's the best replacement filter? Not after an induction kit. I know some of them can cause problems with sensors.

Any ideas

 

Green Filter or ITG..........

 

There's plenty been written on this, so the search button will no doubt yield a wealth of info.

Green or K&N are the safest, thanks to their very low oil levels. Suggest you avoid the ITG Performance Panel as there are plenty of instances of the gunk on these coating the MAF sensor, and making it misread.

 

Cheers guys