Aftermarket ECU will be down the road for sure. I have a Turbosmart FPR800 and a Walbro 255 fuel pump going on along with all the other goodies. Only planning on 8-10 psi on the first go round. Stock ecm should run it ok to begin with. There will definitely be upgrades down the road. Should I run a manual or Auto Ecm. Have the rest figured out for the most part.