| What's the bug Fred? I haven't taken any more pics of the setup yet because I am still refining it. Bracketry to support the weight of the filters is being worked on. To answer your question, and the answer should be obvious based on the description of how it works and why it is superior to what's out there, the MAS is before the "X" on the driver's side. There is actually a dummy MAS on the passenger side too. When I say "before", I mean it is before the "X" in the direction of the flow of air. In the pictures I posted, you can't see the MAS or the filters because they are below the top edge of the bumper. There's no room to put it after the "X" and you wouldnm't want to do that anyway. The idea is to balance the intake such that exactly half of the total air enters each filter. If you were to measure both MAS voltages at the same time under varying engine conditions, you would see that they are both seeing the same amount of airflow, which is the case in this design. By doing this, the MAS you are reading from is metering exactly half of the total air intake and this allows the ECU to properly guage engine load/fuel delivery/ignition timing, etc etc etc. The problem with the JWT dual-pop setup is that the assumption of both sides drawing the same amount of air is incorrect. The exhaust manifolds are shaped a little differently from one side to the next which makes one side spool a little faster so depending on which side you are measuring from, you will have one bank running rich and the other will be leaner. To overcome this problem, all you need to do is build a mechanical adder/divider. This is achieved by using a shared plenum, or the "X" as people like to refer to it as. It doesn't matter if one side is pulling in more air than the other, the total airflow is added at the "X". Down at the bottom where this "X" opens up into two seperate pipes is where the total airflow is "divided" equally. Having both sides with a MAS unit, velocity stack and filter all of the same for each side makes the restriction equal. By making it equal you achieve a truly 'split' airflow. It wouldn't matter which side you meter from, they will both produce the same results and do it much more accurately than the dual-pop available now. *Patent pending*
[ ashleypowers.com ]
[ agpowers@bellsouth.net ] [ Zemulator Information Sheet ] Enthusiasts soon understand each other. --W. Irving.
Are you an enthusiast?
|
