guys, i haven't been on in a while as i've sold the starlet and gone subaru. about the MS the fast idle valve or ICV to the left of the manifold can still be used, MS has provisions for it and once properly tuned it can really improve the driveability of the car.
my cousin is running a ford MSD...
he came right off of light cruising, where it would be ok for the car to be running lean
same things as reading plugs, i'm sure if he was to give the car a WOT run and shut off the motor immediately and then check the turbo it would be fine
the compressor housing outlet usually carries the glange to bolt to the stock up pipe when the ct9 is for a starlet application, this one just has the regular ~2 inch pipe coming out, no bolt pattern