[cotbu]

There's a reason not to mix and match the injector brands.
And a big NO NO for adding 1 DW injector. The latency and actual flow. The latency will be incorrect for the same size, and the actual flow will differ drastically. It's probably a better idea to have the faulty injector rebuilt along with the good ones. There used to be an addition driver device that could allow you to add the injector seperately from the ecu, you could use that as a temp fix, but the cost outways the first option.