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There's no real way of knowing unless you pull a cylinder head off and check the bore of the cylinder and check the swept volume of the piston.
I've pulled AD code cases apart (1600cc) and found 77mm cylinders making the engine a 1300cc.
I've also pulled apart a friends AB code engine and found a wasserboxer crank had been fitted.
Please let us know how you get on.

Ned355 wrote: ↑Thu Jul 15, 2021 10:18 am Please don’t kick my ass but I’d like to ask a question about D codes.

It’s topic related with no dumb question to follow.

This is my engine code: DS728944

So what the heck is that. An S in there.

Respectfully;

Ned