Welcome.
I had that problem(stuff shutting down) with my 04 compg when i had the chrome torque stars. They were constantly leaking. make sure your tires are inflated the same.
As far as the stutters you need to be able to read the codes. Most will keep torque pro handy on their phones with a obdll bluetooth.
Might be a simple vac leak off the factory lines. Check the T under the charger snout to the back map sensor around front to the solenoid.
The other thing for the blinky lights might be a bad wheel hub or just a wire to the speed sensor on 1 of the corners.
