Checking timing 13b turbo?
 

So the car has been sitting for the last 9 months. Nothing has changed.

It used to run fine, on a MT8 -
I haven't touched the CAS at all.
I have turned the motor by hand the last 9 months with pre mix 2 stroke.
Installed the LT10c
Wired up the same way, basically - the CAS should know where HOME is correct? the Dashboard says its OK - and no errors. TPS is all calibrated etc etc, no other errors showing.

I am having issues with retarded timing (idling) from what we can tell as the exhaust runners glow red (also cat) after about 3-5mins if just idling... So it starts within 5 seconds and idles to what sounds OK?

Having nothing has changed is it still possible for timing to be slightly lost from what i have done?
Tripled checked the coil wiring (running GTR R35 coil packs), and it looks fine. Triple checked the CAS wiring and also looks OK.

The motor is also a Semi-bridgeport (secondary only)

If everything externally looks fine, then you should probably look at your tune to ensure its not retarded.