Air temp compensation tables

Maverik · Post by **Maverik** » Wed May 13, 2009 3:06 pm

Hi,

in Parameters/Temp Compensation there is a table for ignition compensation vs air temperature and load.
I'd like to know the definition of:
- Retard (IGN degrees pulled off?)
- low load (rpm, MAP value)
- high load (rpm, MAP value)
I had a look to the help, but I couldn't find an exhaustive answer.

Thanks

Post by **Spunkster** » Wed May 13, 2009 4:17 pm

Retard means the oposite of advance, meaning taking away.

Low load means part throttle and idle, High load means wide open throttle.

Maverik · Post by **Maverik** » Thu May 14, 2009 12:01 am

Retard means the oposite of advance, meaning taking away.

So, considering the high load ignition compensation table in the picture, am I taking away 0 degrees of timing @ 30C IAT, 5.25 degrees of timing @ 55C IAT and 10.75 degree of timing @ 80C IAT? Is that correct?

Low load means part throttle and idle, High load means wide open throttle.

You mean, the load is calculated only by taking into consideration the throttle position? (for example something like: Low load = 0-50 % throttle opening, High load = 51-100 % throttle opening)

gigaCTR · Post by **gigaCTR** » Sat May 16, 2009 2:04 am

hey mate

i think hondata defines map rows 1-6 as low and 7-10 as high.

Maverik · Post by **Maverik** » Mon May 18, 2009 12:56 am

Low load means part throttle and idle, High load means wide open throttle

i think hondata defines map rows 1-6 as low and 7-10 as high.

I'm still confused on how the ECU calculates the load: does it depends on RPM or MAP or TPS or a combination of them?
What is the load value used by the ECU to switch from low to high load tables?

Post by **Hondata** » Mon May 18, 2009 10:42 am

Load = manifold pressure. There are additional tables which determine 'low' and 'high' load. As a guide, use the open/closed loop switch-over setting (about 80 kPa).