I'm just wondering what is better??? Should I Upgrade my injectors or use a FMU? I'm going to be running 6#'s of boost on my car which has ported heads and cam

 

Injectors and tuning is the best option. an FMU is fine to run, but you don't have the efficiency or the control you have with the tuning and injectors.

 

I totally agree, a FMU is basically a bandaid. If you choose to replace the injectors you will have to recal your PCM in order for the PCM to recognize the new injector size.

 

Pick up LT1 edit and a laptop....take a trip to the local chasis dyno. When he's done...you'll probably be broke...but you'll notice a huge change in ur car. Between mine and my buddies cars...seen it make a big difference many times.