Road tuning - ignition timing & AFRs
Hey guys,
I'm running a local full EMS system on my car. I usually have it tuned on a dyno by professionals, but often find that the map needs adjusting on the road afterwards as conditions are somewhat different.
So I've taken to road tuning it myself lately. I have a wideband in the car and I've pretty much gotton the hang of tuning the AFR's myself.
Now, I tune the AFR's for 14.7-15.0 on light throttle and low RPM. Then through the medium throttle positions I go to low 14s and then for full throttle high rpm I target 12.7-13.2. The car feels ok, but are these the optimum AFR's for power on full throttle?
Now, my main issue is ignition timing. How will I know what is optimal and what makes the most power, without being unneccessarily harsh on the motor? Or is it simply a case of advance , advance, advance until it knock is audible and then backing off a few degrees?
Muy tuning maps are quite simple to use. Just RPM And throttle position. The EMS interpolates the inbetween values itself.
I'm running a local full EMS system on my car. I usually have it tuned on a dyno by professionals, but often find that the map needs adjusting on the road afterwards as conditions are somewhat different.
So I've taken to road tuning it myself lately. I have a wideband in the car and I've pretty much gotton the hang of tuning the AFR's myself.
Now, I tune the AFR's for 14.7-15.0 on light throttle and low RPM. Then through the medium throttle positions I go to low 14s and then for full throttle high rpm I target 12.7-13.2. The car feels ok, but are these the optimum AFR's for power on full throttle?
Now, my main issue is ignition timing. How will I know what is optimal and what makes the most power, without being unneccessarily harsh on the motor? Or is it simply a case of advance , advance, advance until it knock is audible and then backing off a few degrees?
Muy tuning maps are quite simple to use. Just RPM And throttle position. The EMS interpolates the inbetween values itself.