As mentioned previously, I sent the Century BMW repair estimate to the the dealer in Houston. No response from them. My presumption is they are shell shocked with the $10K to replace both HPFP's. I am still trying to work with them to cover some portion of these repairs.
With regard to the low pressure fuel sensor, I have not seen that mentioned in the 7 series threads that I have read.
Does anyone advise replacing the integrate power supply module as had been previously mentioned in the thread by Gadget760Li.
By the way, do a You Tube search on BMW high pressure fuel pumps and you will find several failures and the safety concern these failures are causing the owners of these cars.