[vettestr]

Tongue, You are right about many systems being restrictive. I played around with designs and diameters to find the right combo for my set up. It did take a little tinkering and research though. I ran 2 cone filters, and are plumbed into the 950 CFM injection throttle body via two each 4 1/2 diam fiberglass tubes that I made. Using the formula tables at the back of catalog this contraption would feed my 542 inch engine at 7500 RPM plus have 28 percent additional volume available. I also found the intake air charge temp was a minimum 30 degrees or more cooler than an T B mounted oval paper air cleaner because the air was taken from the grill not under the hood.
Having all numbers available from the software of the injection CPU made gathering data easy. The most restrictive area was the HAT on top of the throttle body but spacers made it better. It also measured MAP pressure and I could moce sensor about 18 inches. This allowed me to measure before and after hat to compare readings of temp, vac and ambient air pressure,.