02 sensors

[Michael Kent]

Yesterday I had a chat with a tuner in the LA area who said he had done 
some back to back tests of a Bosch sensored Haltech A/F meter and a 
Horiba. He found that the Bosch 3 wire sensor worked ok on the lean side 
of stoch as long as the EGT stayed constant. If there was any kind of 
change in EGT the indicated A/F would change on the Haltech but not the 
Horiba. The DFI injection system was programed to keep a constant 12:1  
over the test window.

I would like to know what others have found out about the accuracy of 
these inexpensive A/F meter set-ups. The idea of getting a multi thousand 
dollar Horiba is *way* out of the question for a mortal like me. If the 
cheap meters aren't accurate why use poor information?

Mike Kent
starving engr student
'87 Mitsu Starion ESI-R