can u set the ratio by yuorself at home or do u have to bring it somewhere?? if u can do it yourself how do u do it?? thanks guys

 

If you have a wideband and are clever enough to hook it up to your Hondata or Crome ECU, you can datalog and tune your A/F ratio.

 

i have a chipped ecu from phearable...i dont kno if it has crome in it...wut would u need tho? a wideband sensor and a computer?

 

I use an LM1 wideband and use it's analog output to feed my Hondata S300 data. As I drive the vehicle, the air fuel ratio for each load and rpm point that my engine experiences is logged and recorded, in that cell. So if I am shooting for 14.7:1 at 2500 RPM and 17" of vacuum, and my Hondata records an A/F ratio of 15.7:1 at that load/RPM point, I just add roughly 10% fuel to the cell at 17" and 2500 RPM. I can drive the car to work, while datalogging. After I arrive at work I can look at my datalogging maps and make the changes needed.
To datalog with Crome you have to purchase the Crome Pro license and a Hulog or similar to send the data from your Crome ECU to your laptop. If you have a PLX or an LM1 wideband, you can also get pretty close just by watching your A/F at different RPM and load points. Having a second person in the car to watch the wideband while you drive is a must.

We tune each cell on the dyno under very controlled conditions-the Dynapack is very handy just for this reason. We can hold the RPM steady at 2500 RPM and modulate the throttle to each load point at 2500 RPM, while watching the A/F, and make changes in realtime. In this fashion we can tune until the desired A/F at each RPM/load point is achieved.