[Dynovalve Frank]

The Dynovalve is essentially a computer controlled PCV valve. It utilizes a small microprocessor to control the recovery of the crank-case gasses over the Dynamic Range of the engines operation versus, the mechanical PCV valve which only operates at peak efficiency in a very Narrow Band of operation.

Both devices are still completely reliant on the engine's vacuum signal, Where the DynoValve differs is that it is nearly always recovering the crankcase gasses nearly in full except at idle where it's orifice design allows it to act exactly like a stock PCV Valve. Without this default (at idle) feature the Dynovalve would act as a large vacuum leak and have terrible effects on drivability.

The percentage of fuel now being scavenged in a continuous stream coupled with the hydrocarbons (which is an additional combustible) are seen by the factory PCM as a rich condition via the O2 sensors. Therefore the PCM modifies it's injector pulse width signal to compensate. So basically by recovering these lost gasses to be recycled and capitalizing on the PCM's abilities is where the increase in fuel economy stems from.

Clearly vehicle type, driving habits, driving environment (city/hwy) fuel types/blends which vary greatly across the country all have a role in your final mileage gain. But the emissions reductions are nearly always constant by vehicle type.

The last benefit we can proclaim is that your oil change intervals can be broadened should you feel comfortable in doing so. Oil contamination is mainly caused by Blow-By and the mixing of these lost gasses with such. By removing the the unburned gasses before it has a chance to blend with the oil we've been able to double the oil lifespan on our internal vehicles.

On my personal grocery getter, 2003 base model Acura RSX I've hit 46 miles per gallon on the highway while cruising at 65 MPH over 100 miles. City driving has seen an average of approx' 15%.