Tuning W/I via Humidity Sensors

[Flr Power]

It is useless to tune WI via an humidity sensor since you need excess water in the combustion chamber where most of the work is done...

[parmas]

Originally Posted by Flr Power

It is useless to tune WI via an humidity sensor since you need excess water in the combustion chamber where most of the work is done...

I didn't understood your theory. Please explain

[Flr Power]

Not mine but rather 1940's theory!

[parmas]

Originally Posted by Flr Power

It is useless to tune WI via an humidity sensor since you need excess water in the combustion chamber where most of the work is done...

You need to define the terms "excess water". At some point of excess you are mentioning the water injected will actually be blowing off the spark, reducing power stroke due to unburn fuel and less oxygen due to Air filled with water.

More excess than that and you will blow piston rings and head gasket or hydrolock.

My theory of using humidity sensor is to be able to achieve the maximum water injection benefit without causing the above effects. I mainly use water injection to cool the intake air to prevent detonation at higher boost pressures.

Above the so called DEW point you will not cool any more air as it is already 100% filled with water.
At this state the more you increase water injection the more air you will displace due to excess of water into the system.

Less air = Less power = Pointless excess !