In Reply to: Re: H&H actually used a stroked 4.0 V8 - 4.4 ( posted by STT on July 07, 2000 at 09:08:54:
Do you mean that you are using a MK Motorsports supercharger on your 540i? Back in 1998 when they first brought out the conversion, they used a vortech supercharger. They must have changed.
Re. : With 7.5 boost on Vortech POS with 70% adiabatic efficiency and no aftercooling you can hardly get over 410 hp on pump gas.
I have seen over 420hp with no aftercooling at 6 psi on a 4.4 litre vortech supercharged car.