What A/F for best top end power?

[V8Pinto]

I'm tuning for max power at 10,000-10,800 in top gear. What should my target A/F be?

Looking at everyone's dyno charts, I see some at 12.5:1 and some at 13.1:1

Does it just depend on the combo or dyno? Just to mention it, I'm not using a dyno, I'm using full throttle runs (in 4th gear for tuning and 6th gear during races) and monitoring the A/F with an 02 sensor. Then I go change that with a PCIIr. This is on an 06' Busa.

Thanks for any help you guys can provide!

 

[onedownfiveup]

Are you doing this on a drag strip? If so you can tune for faster times that way.

Every bike likes something different on air/fuel. It just depends.

 

[V8Pinto]

1.3 mile dirt track and 5 mile salt track at Bonneville.

 

[GPW]

1.3 mile dirt track and 5 mile salt track at Bonneville.

12.8 AFR for LSR seems to work really well for N/A..not dyno HP but actual LSR racing..

 

[V8Pinto]

Thanks Greg!

 

[gixxerfast1x]

not sure