Originally Posted by dave1251
Originally Posted by philipp10
If a catch can is beneficial why do 't the manufacturers put them on?
It can't be very beneficial if it was all the GDI engines with issues would have it installed at the factory. Its less expensive and takes less time then to reenginer an engine with both port and GDI.
Understandable reasoning but as explained by StevieC and others, including Engineering Explained, people are just lazy and this is another maintenance item needing regular service...