Best Tuning Device

[Renato Velati]

Which Is Better To Tune. Air/fuel Ratio Or Exhaust Gas Temp. What Are Pro's And Con's For Both?

 

[441120]

Wide band O2
EGT has too much delay, like a police report after the crime.
The damage is done and you can watch the meltdown on the gage

 

[Ormand]

Best tuning? Knock gauge, and a stop watch! Seriously, there is no "target" to shoot for in either the A/F reading on a wide band, or the temp reading on an EGT meter. How would you use either one to do an initial tune? You have to tune for max performance, with little/no knock. When you have done THAT, then you will know what conditions are right for your combo, and if you have a wide band, or an EGT gauge, you can see what the "target" should be. Depending on a lot of things, one engine might like 1400, another might like 1500. One engine might be running best with 12 to 1, another might need 11.5 to 1. You just don't know, until you try it, and see.

 

[my 1st gn]

Best tuning? Knock gauge, and a stop watch! Seriously, there is no "target" to shoot for in either the A/F reading on a wide band, or the temp reading on an EGT meter. How would you use either one to do an initial tune? You have to tune for max performance, with little/no knock. When you have done THAT, then you will know what conditions are right for your combo, and if you have a wide band, or an EGT gauge, you can see what the "target" should be. Depending on a lot of things, one engine might like 1400, another might like 1500. One engine might be running best with 12 to 1, another might need 11.5 to 1. You just don't know, until you try it, and see.

I agree