The post '96 940s were only sold with turbo engines B230FT and B230FK with the only mechanical difference being the turbo wasetgate actuator allowed higher boost in the FT ~7psi vs ~3.5psi in the FK.
The main upgrade internally was in 1994 I think, when stronger connecting rods and piston oil squirters were fitted.
In 1997 the EGR system was deleted as a better catalytic converter negated the need.
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Gavin
1997 945 CD (B230FK) [RIP: 1991 945 Turbo (B230FT) 1992 945 SE turbo (B200FT)]
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