ECU as in aftermarket? If so then I would say you should get the PFC. Make sure that you search and learn as much about it as possible. Also, when planning for your purchase, DO NOT overlook the price it takes to get it properly tuned. I would guess that you are looking at around $400-$1000 dollars for a tune depending on how good of a tune you want. Also, unless you are near a power excel shop, you will want to purchase a datalogit. Your tuner can use it to tune the PFC and it is MUCH better than the commander. You can get everything that you need from monkeywrenchracing.com. Good luck.