A Manufacturer of Auto Parts Has Just Learnt About the Toyota

Short Answer

A manufacturer of auto parts has just learnt about the Toyota production system and is trying to implement JIT. Traditionally there has been no control on the amount of work in process inventory between stages (it has been known to exceed 500 parts between some stages). As a first step the amount of work in process inventory between stages is limited to a maximum of 20 parts. What, if any, impact does this have on the output from the factory on the short term?