So im working on a 2017 3.5 raptor. We did bolt ons consisting of upgraded intercooler, turbosmart bov, turbo adapters, s&b intake. I got it to hold 19 psi of boost throughout the whole pull but the issue I'm seeing is that it lost around 20-40 hp above 5400 as compared to the tune where I had less psi. I'm still seeing combustion stability and tip desired is below actual. lower limits was my first pull and injector timing was my other pull where I got more psi but lost top end horsepower. I'm starting to believe these trucks don't like that much psi. saw a max of 443 hp sae