i was asked by several interested in TAS just what was the limit of flow with the stock air intake parts---------i did some flowbench testing and here are some of the results------i am printing these here for everyone to see since i would think anyone interested in this class would want to know this------as we all know there are jillion conbinations that could be measured--------i tried to make this simple and to contain useful informanton-------pictures will be printed in the next post in order of the descriptions so it will be clear----------first pic is of a gutted MAF------i figure if anyone is going to be competitive in this class its gonna need to have this done to some degree so for all tests the numbers are with a MAF gutted as shown in the first photo---------second picture is of a fully assembled intake assy without a filter and without a turbo inlet bell-------flow at 28" of water (equal to 1 psi of air pressure)-------flow was 466 CFM-------third is same test with pipe bent in approx shape when installed in car-------28" with 453 CFM--------next was same as second pic with addition of stock GM air filter------28" with 445 CFM------------next was same test as last pic with hose bent 28" with 413 CFM--------next was same as last test but at 48" of water (1.7 psi) resulting in a CFM of 560 CFM as a reminder that these flow test numbers are limited only by how much pressure drop you are going to allow---------for next test conditions are done back at 28" with a stock inlet bell added (vent port blocked)-------flow is 357 CFM--------next is a ported inlet bell (ported to 2.35 inch, polished and with vent blocked and smoothed)----flow is 390 CFM-----------clearly the inlet bell is the major restriction..............RC