Thats an OLD article...
In a real world no Air Filter
will be completely submerged and stay like that for long periods of time. It will splash in and out of water and this is when an engine will hydrolock. It doesn't take an Intake
full of water to hydrolock an engine, it takes a teaspoon of water in a cylinder to cause hydrolock.
This represents a true street application:
Pulling the filter out of the water with the engine still pulling hard, however, caused something rather alarming to happen. When the filter was pulled out of the water, air immediately started going through the filter, even though there was still about a foot of water in the pipe. The trapped water frothed and thrashed about in a most alarming way
Now imagine this on a street car where you don't have a giant vertical pipe protecting the engine, you have a lot less height difference when the Intake
is in the car. AEM
bypass valve is just a make believe bandaid for a poor Intake
design by AEM
, also another way for them to make more money.
If the valve really did work, why wouldn't WRC cars use it? Because it doesn't work.