sounds like the old cable has broken off the linkage in the box problem, either new cable time or you can modify the old link to fix the problem forever
yep got a sensor problem somewhere/
codes
P2105 Throttle actuator control system - forced engine shutdown
P2110 Throttle actuator system - forced limited RPM
When it plays up the check engine light comes on and the d starts flashing, then the car rolls to a stop with the engine not running and you need to cycle the key to restart it
spilled coffee over my new phone and laptop 2 weeks ago, phone promptly chucked a spack attack and started buzzing, had to put it a another room in rice to let battery discharge(battery is integrated, cannot remove easily). got the sh*ts and left it. laptop survived. tonight managed to strip it and give it a bit of a clean and it is now charging normally. if it works it will be a post in the WMYFGT
loosing coolant wont be a tune issue, get the radiator pressure tested. as for the boost problems could be any number of things, start by changing fuel and air filters, are the coils ok and are the spark plugs in good condition and gapped right for higher boost (around .7-.. check for leaking hoses do the boost solenoid maintenance ( do a search in the forum), checked for error codes
Gunna, a manual trans on a sedan will break the cv's on the drive shafts and maybe the diff hat, but you have a ute and a solid diff so all you would break maybe is the spline on the shaft to the wheel, but you have already upgraded most of the breakables