solution to why my car stalls on the freeway at 70 mph. on 1998 Jaguar XJ8

replaced fuel pressure regulator and filter

Asked by for the 1998 Jaguar XJ8
2 answers
What other symptoms , and did you actually test the fuel pressure before replacing parts?
Sounds like your computer needs to be reprogrammed. This should
have been done by the dealer under a recall they issued.