Complex sentence: Originally the V12 was supposed to get an advanced Fuel Injection system under development by AE Brico but this plan was cancelled at a late stage, possibly due to concerns that the design was too similar to Bosch products.
Split into simpler sentences: Originally the V12 was supposed to get an advanced Fuel Injection system under development by AE Brico. That was cancelled at a late stage, possibly due to concerns that the design was too similar to Bosch products.