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Message: <blockquote data-quote="astroboy" data-source="post: 488936" data-attributes="member: 4527">Best buy new one.. no headaches.. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue    :p" loading="lazy" data-shortname=":p" /> cabutz....Get the engine code. M52B20 means its a M52 engine, 2.0L (Using accelerator cable)M54B22 means its a M54 engine, 2.2L (Drive by wire and upgraded manifold, etc)These engines are shared among the different chassis, and commonly found in the 5 series E39 too.wikipedia has lots of info about these different engines, go google it out.The newer engine produce more horse power but more electronic gremlins, u want reliability, get the older engine, u want performance and efficiency, get the later model.</blockquote>