a colege of me has the space wagon bj 1994 with 1351 ccm with 65 kw and supposedly boxer motor… as it is known, boxer motors can be well done therefore my question… what can I do or what do I have to do to get more power am only familiar with vw thought so much about a compaction reduction and nock??? many other injection nozzles.. knows there someone exact sizes and where you get something like that???