should I expect any parts in return?

(this is for the 10 hp airbox/injector upgrade)

 

You should get your stock airbox and injectors back. There is no reason for the dealer to keep them, since the JCW upgrade kit is sold without a core charge unlike the Works Package.

Tell the dealer you'd like your removed parts returned.

 

well they did give me my old airbox back, but no injectors....hope they replaced them?!

But I do love the whiiirrrrrrrrrrrrrrrrrrrrrrrrl

 

Peek under your intercooler at the injectors. The JCW injectors have a blue plastic upper section where the terminals are. The stock ones are beige.

Again, other than the fact that the stock injectors are valuable as replacements as well as being modded for higher flow, there should have been no reason the dealer didnt return these to you.