You have two CPSs; the right bank CPS is probably failing intermittently, and, if true, will cause a loss of power, at very least, and a stumbling engine, at most. Replace with a BMW-branded CPS.
The two lean codes could be caused by intake leaks, downstream of the MAF. The gasket between the throttle body and the intake manifold has been known to fail.
Don't know what a "vacuum jet pump" is.
Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.
Last edited by edjack; 11-01-2011 at 09:22 AM.