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Hello, I`am Marcelo from Brazil, Rio de Janeiro! My RS4 is AVUS and I made a 3.0 conversion. Some Pictures: https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-ash3/544605_3104288742204_1891428282_n.jpg https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-prn1/150476_3104906037636_1817107168_n.jpg https:...

I have an issue with misfiring at high rpm. Fitted new fuel filter, new pressure regulator, new coils, spark plugs, cleaned fuel injectors (works perfectly)... With fuel pressure gauge I found only 1bar of pressure on main fuel line. After investigate a lot, I found this return valve leaking a lot i...