The stock system is good to about 7000 RPM on a 2.0l engine. It runs out of air/fuel moving capacity above that sort of a soft rev limiter? I have seem a couple of examples of 2.2l engines with the FI WEB cam and larger injectors and they work okay but they could have made more power with an aftermarket system. After market FI systems seem to be more expensive than carbs and check out the links on
http://sandrail.com/manufact.mv as there are several FI makers for type IV engines listed there. Good luck.