I currently own a turbo 2.5 YJ, and I love everything about it. The 2.5 has no problem taking 7-8 psi, but that being said, I run 12 psi through my lightly built setup. There are ways to get it to work without extensive ecu work, but honestly it's worth going with either a standalone or piggyback ecu. It is time consuming, expensive, frustrating, requires lots of custom fab, and I'm currently on my third ax-5 lol, but it is so much freaking fun to drive. Is it worth it? Honestly probably not, you can build a much more reliable and practical rig for less money, but if you're more interested in having a unique and fun jeep with lots of smiles per gallon then maybe.