hks VPC ?

the hks vein pressure controller.
are they avaliable for skylines not gtrs do they elimiate the need for air flow meters and how much.
its interesting cause my s-afc suppports this and it might be a way to get around the airflow restictions but the price looks prohibitive.
do you need another computer or will an s-afc do.
airflow meters seem to be a problem alot of people have.
any Idea's
meggala

The HKS VPC is designed to physically and electronically replace OE air metering devices which present a significant restriction to the intake system and offer no adjustment or reprogramming options to take advantage of dramatically higher air flow or larger fuel injections. The VPC converts both air flow meter and air mass sensor systems to what is referred to as speed density systems by utilizing a 16 bit central processing unit reading its own intake air temperature sensor and absolute pressure transducer (B-MAP sensor) signals. This unique conversion feature not only allows the VPC to replace the factory air flow metering device, but also eliminates the need for a fuel cut defencer. Another benefit of the VPC is the ability to create our own programs to take advantage of large fuel injectors and new air flow characteristics (larger turbos). In some specific instances, the VPC may be used in additional to the PFC F-Caon and larger injectors for the ultimate in HKS plug-in fuel system technology. VPC equipped vehicles respond quicker with improved horsepower. To take full advantage of the VPC, HKS VPC Power Flow adapters with the HKS Super Mega Flow air filter should be used.
that was taken off a web site i was reading the other day i am thinking of getting one but the price is a killer around 900us ouch i dont know maybe i will just get the s-afc