I don't run them on boosted applications...You should be running very high tension oil rings with lots of boost... These pumps are common with low tension oil rings in NOS and N/A motors where every last bit of power is needed.There is soo much power with a blower you're not giving up anything.....Look at any Blown Pro Mod you just don't see pumps... You want a large catch tank vented to each valve cover... Hell even the fastest F3 Procharged drag radial car doesn't run a pump good enough for Steve.....