So I'm just wondering what mods I'm going to be needing to reach around 360 whp on my 2016 WRX? I would love to go 400 whp or higher but don't really see there purpose. I know that of course I would need an intake, turbo back exhaust, and a tune. But am I going to need an upgraded turbo to get that high? Any mods that you would suggest let me know, I'm open ears for any info! On a side note, am I going to see a big difference from a high flow catted Jpipe and a non catted? If there is a huge difference I would do it, but I live in Colorado and have to do emissions and I can't stand the smell of the complete catless exhaust.