My dude. Seriously consider investing in some chassis bracing. It’s not cheap but TSSfab makes front and rear subframes, plus Cusco makes SF5 specific braces, but also some GC8 parts will fit. Power is kinda pointless without a solid foundation to get it to the wheels. Everyone likes a bird eating turbski though, don’t get me wrong. Also you could go with a DCCD controller from DCCDpro and that would give you RWD on demand. However, your ECU would have to be able to grok it. Between making sure there’s no flex in the chassis, your drive train is properly braced, and the DCCD controller you should be able to break your wheels free for burnouts and donuts. A bigger turbo without those things might not be the answer.
My dude. Seriously consider investing in some chassis bracing. It’s not cheap but TSSfab makes front and rear subframes, plus Cusco makes SF5 specific braces, but also some GC8 parts will fit. Power is kinda pointless without a solid foundation to get it to the wheels. Everyone likes a bird eating turbski though, don’t get me wrong. Also you could go with a DCCD controller from DCCDpro and that would give you RWD on demand. However, your ECU would have to be able to grok it. Between making sure there’s no flex in the chassis, your drive train is properly braced, and the DCCD controller you should be able to break your wheels free for burnouts and donuts. A bigger turbo without those things might not be the answer.