No need to remove intake or exhaust cams. No risk of setting the cam timing wrong. Application: Compatible For BMW N62 and N62TU Engine Type No need to remove intake or exhaust cams. No risk of setting the cam timing wrong. It also allows the car to pass Smog. Applications: Compatible For BMW 745I & IL (E65 & E66) From 2002-2005, Compatible For BMW 750I & IL (E65 & E66) From 2006-2008, Compatible For BMW X5 4.4i/4.8is (E53) From 2004-2006, Compatible For BMW X5 4.8i (E70) From 2007-2010, Compatible For BMW 545i (E60) From 2004-2005, Compatible For BMW 550i (E60 & E61) From 2006-2010, Compatible For BMW 645Ci (E63 & E64) From 2004-2005, Compatible For BMW 650i (E63 & E64) From 2006-2010.