Quoting Mike Pittinaro <mechimike@xxxxxxxxx>:
Plus,
> eeven with the booster connected, the idle seems rich
> (black stuff out the pipes). Hmmmmm...
>
Mike, fix/adjust this soon. Its not good for your engine to run that rich. It
will also contaminate your Mobil 1 faster. Also, that may be why the vacuum
leak did not affect idle much. Being so rich, it could tolerate some leaner
mixture due to the vacuum leak.
D^2