I'm confused. Not that i'm looking at buying one but just interested to learn about some of this stuff.
Am I right in saying that the FMS seal is the problem as it gives way due to excess pressure. This is a back pressure caused by the bracket, cooler and filter downstream of the FMS.
This is where i get confused, if you make the downstream components more free flowing, therefore moving most of the restriction and reducing the back pressure, aren't you increasing the effective pressure on the FMS?
To explain: If the inlet pressure to the FMS is 10 Bar (for example) and the downstream back pressure caused by the (restrictive) stock system is 4 bar (for example), the effective pressure on the seal is the differential of 6 Bar.
Once you change to an aftermarket free flowing system designed to reduce the FMS downstream back pressure to say 1 Bar (another example ) the effective pressure on the inlet to the FMS is now 9 Bar.
Higher than before, but it stops the seal from blowing beacuse of the reduced pressure
Sorry if I've totally missed the point here.