TripleZee Cycles

Accurate Combustion Analysis
Aids correct setting of fuel mixture, ignition timing, valve timing, exhaust tuning, anything which has an effect on the Combustion Process

Emissions Testing
EPA standard. Low Emissions don’t necessarily mean you have Low Power

As the name suggests an EGA Analyzes the Exhaust Gas

The 4 major gases it analyzes and monitors are

O2     unburnt oxygen

CO    a product of the combustion process. It is directly related to the combustion process and will only change if the combustion process changes.

CO2  also a product of the combustion process. The level of CO2 is an indication of overall efficiency of the combustion process

HC    unburnt fuel. An indication of how complete the combustion was.

 
These gases are always present to a lesser or greater degree, irrespective of rich, lean, advanced, retarded etc
Contrary to popular belief a Rich Mixture will still have O2 in the exhaust and a Lean Mixture will still show unburnt fuel in the exhaust.
Their amounts and relationships to each other give clues as to AFR, ignition timing, valve timing, abnormal or incomplete combustion.
For example Over Advanced Ignition (could be due to fuel type, compression ratio etc) will result in increased oxygen levels, due to increased NOx production because of higher temperatures, decreased CO2,

The biggest advantage an EGA has over a WBO2 is the EGA is monitoring the Products of Combustion (CO, CO2) and Non-Combustion products (O2, HC)

A WBO2 only monitors one Non-Combusted gas, O2, which in itself doesnt say much about what is going on.

The Products of Combustion are directly related to the Air Fuel ratio and the Efficiency of the Combustion Process.
Residual O2 levels in the exhaust can be there for many reasons, not just Lean Mixtures.

IF AN EGA IS SO GOOD WHY DOESN’T EVERYONE USE ONE ?

$1000 for a WBO2 and $10,000 for an EGA is a good start.
They are used by big outfits, manufacturers, race teams, EPA, etc
Specialist Car shops for years have had them as standard workshop equipment.
There is a bit more to interpreting EGA results than reading a digital readout of a WBO2
Slower than a WBO2, takes a few seconds to get a stable reading. So can only be used on a decent Brake Dyno

For general purpose use a WBO2 gets you pretty close, but if you want accuracy it’s the wrong tool.

 Technical Questions/ Product Inquiry?