yellow jackets are junk but that rant side lol, the SMIC is your issue, 3 or more pulls will usually see intake temps creeping to scary heights even as low as 10psi. Put a front mount on and it will repeatedly run the same power and take far more timing (15-20 more kw with timing and another 2 psi).
178rwkw is not far off what it should be, in fact it is almost spot on for a SMIC result with an accurate dyno.
put it this way we wont tune R34, stagea or S chassis cars with SMIC fullstop.
but that the cas can show similar symptoms.