[spcmafia]

Originally Posted by JIM THEO

Have you ever seen your throttle body interior not to mention your direct injectors?
They are full of smoke and carbon deposits, that's why Subaru calls for injector cleaner every 15.000kms, at least in my area.
I use every 10.000kms HKS DDR which is the most potent hyper polyether amine (PEA) product in the market and what Subaru uses in Japan:
https://www.hks-power.co.jp/en/produ...ddr/index.html

Subaru PEA injector cleaner K0879Y0010:
https://shop.r10s.jp/taxnerima/cabin...sti2/k8079.jpg

That is true, if you live outside of the U.S. Other than that, using the premium fuel from stations like Mobil or Shell should be enough to take care of it.



For more info see below.
https://www.ft86club.com/forums/showthread.php?t=138578