Quote Originally Posted by uncabob View Post
Will a WBO2 help with the gasahol stoich problem?
It will help with understanding what the Air Fuel Ratio is in the exhaust. Is the engine running lean or running rich? Knowing what the Air Fuel Ratio is in the exhaust is very helpful for tuning the Oxygen Sensor voltage offsets and fuel table parameters for ethanol blended fuels. I often think of a WBO2 as just another tool in the toolbox, it simply measures the Air Fuel Ratio in the exhaust, nothing else. It's similar to a digital caliber, it's up to the skill of the user to know to do with the measurements from a digital caliper. The same is true with a WBO2, it's up to the skill of the tuner to know what to about the Air Fuel Ratios measured in the exhaust.

Once the WBO2 Air Fuel Ratio is included into a data log, corrections for an engine running Rich / Lean is less challenging ( corrections to fuel tables are actually measureable).

Using a laptop to fix a fuel table parameter is similar to changing jets in a carburetor, expect no gasoline smell in the shop.

dave w