quick shitroen bx xud engine q.

[Ruan]

That's because it's an XUD7TE... It's the Turbo Intercooled XUD7, afaik the XUD9 never came with the belt driven vac pump... Also early XUD9s almost always came with a Bosch VE, that's got a CAV which suggests to me it's an old XUD7, with the 405 style filter housing.

I may be wrong though...