How big of a turbo do you need to prevent your engine from meltdown or your turbo from grenading due to over speeding? Don't guess; try out the turbocharger flow calculator from BD Diesel Performance. Available online, just enter in your desired horsepower and this nifty little tool will give you flow requirements.
As part of the BD Turbo Selector webpage, once you have found the flow you need, BD has listed its BorgWarner turbochargers with flow specifications to aide in matching the right unit for your engine output.
A must for the road, race or pull diesel enthusiasts.