How volumetrically efficient is the 24valve motor? Percentage wise.
You just need to measure the pressure differential accross a know size venturi and it is not uncommon it is done on most new cars and diesel trucks, you know that little thing called a Mass Air Sensor. All of these things are currently on new vehicles The mass air sensor all so tells the computer what the charge air temp is, humidity, the computer checks the O2 sensor to make fuel adjustment and the Knock sensor to make timing adjustment. If you are wanting to go to the next step from a 12V it would be a 24VP they have all of these things (maybe not the knock sensor) and the common rail is another improvement.As far as guages and being very accurate is there anything to measure actual cfm intake. I know it would be pretty ridiculous to start drilling holes in everything for temps at all the manifolds and getting stuff like ambient temperatures. Be a pain to monitor several upon several guages.
That is right, A new 64mm turbo can be had for 600-700 but that is not one set up for what we want. A HT3B is about 650, and will support about 600 hp. You can make a piping system and make a set of twins that will work well for 1500 and your time but it will not be the same. I think a EFR 6758 would be much more fun, less time consuming to install and less problems down the road, less expense over all. So you want a set of twins?Interesting. The EFR series turbochargers EFR-6758, 7068, 7670 and 8374 models are in the price range of $2,000-2,500.