Henry M Posted November 20, 2018 Share Posted November 20, 2018 Hi all, About to take ownership of a 2001 Legacy B4 TT, am I right in thinking this version of the EJ20 is direct injection and if so are either of these mods worth doing to prevent carbon buildup around the intake valves? Any advice and experience on this matter will be appreciated. Cheers, Henry... Quote Link to comment Share on other sites More sharing options...
Jay762 Posted November 22, 2018 Share Posted November 22, 2018 Wotcha and welcome - not just carbon build up but having oil being blown into your system which changes the mixture and therefore doesn't run as efficiently Quote Link to comment Share on other sites More sharing options...
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