Does not sound bad so far. Here is may setup, no Carrera manifold, but that's not the case here, function principle is the same:
Regarding the noise:
You're pumps are now running as soon you turn the ignition on and the stay running? With CIS they won't run until car is firing up, so you never hear them running before (except you push down the metering plate.
My pumps are a bit noisy to, when I let them run without engine, so maybe it's in the normal range and you just did not hear them running alone before...?
BTW I don't know what EFI you're running, but pumps shouldn't run alone all the time (exception race cars with pump switches in the dashboard), so check the steering circuit from ECU