harpoon : so, we'll keep it a secret, for now :)
yeah, dat wat i was thinking. air flow is important for low revv for torque generation, to obtain dat high G pulling power, and air manifold pressure is important in higher revv to sustain the needs for air. dis is the reason toyota came out wit two kinda special manifold (at least these two r the ones i know of), TVIS on the 4AGE and ACIS on the 5EFHE. both of them have two sets of runners ; long runners : to promote good airflow towards combustion chamber so good pulling torque is achieved, and.. short runners : as the manifold pressure increases, there is no need to assist airflow anymore, dis pressure is gonna generate even higher air flow rate, so air flow dont have to be helped by any system after desired pressure is achieved. dis is alwiz where VTEC shift point is located within ur guys' engines.
FYI, in a charged engine, the manifold pressure can be increased in an instant, so flow characteristic isnt dat important. BUT, if u do give airflow sum attention, den d engine's efficiency is gonna increase drastically!! iam on dis route now, but ive to wait till i can start moding my new turbine first. STEPS : (1) upgrade turbine so dat it wont gasp for air on high revv, increasing its efficiency limit, gonna boost more (2) iam gonna use the ACIS manifold in my engine's application (its a perfect fit compared to the TVIS), and gonna try to tune it properly, its gonna complement the setup iam planning now, hopefully i get the rite rpm to shut the long runners and open the short runners. sum guys in toyotagtturbo forum has done dis, and the results they got is quite impressive