Ion source development at KVI is focused on increasing the beam intensity from the electron cyclotron resonance ion source injector and optimizing the beam transport and injection into the superconducting AGOR cyclotron. We describe several modifications that have resulted in a significant performance increase of the ion source. We also present the first results of ion transport simulations that have been performed to better understand beam losses in the extraction region and in the low-energy beam transport system. Finally, a new emittance meter based on a combination of the pepperpot and scanning techniques will be described, which will be used to benchmark the simulation studies of ion extraction and transport in detail. (c) 2008 American Institute of Physics.