CA18DET Ignition Dwell Duty Table

[Noz]

Hi Matt,

Just wondering how to add the Ignition Dwell Duty table to my S13 CA18DET address file. It's found at B890->B8AF (should be 3890->38AF)

Also the Dwell Voltage Correction Coefficient, found at BF00->B8AF (should be 3F00->38AF)

Also, there appears to be a slight error in the Idle Gear Timing map: The table of values has a max. RPM of 6200, the corresponding graph has x values half of what they should be (max 3100 RPM). Adjusting the value in the table for 5000 RPM changes the graph value at 2500 RPM for example.

Cheers.

[Noz]

Those address locations are taken from a TunerPro address file. It appears to be reporting 3's as B's

As quoted in a Nico article:

the ca18det dwell map is located at H3890 and is 32bits long

[Matt]

thanks I've changed the max graph value to 6400 now for the next version

Add the following to your address file using a text editor and you should be set

DWELL_DUTY,&H3890,32,1,32,1,Coil duty
DWELL_TIME,&H3F00,16,1,16,1,Coil time

[Noz]

Cheers Matt, made a mistake in the original post, Dwell Time is 3F00 -> 3F0F.

[Matt]

No probs. Change the length from 16 down to 8 in this file for both parameters

[ByReaL]

so witch are the final corrected lines that should be added in the address file

[Noz]

I've used

DWELL_DUTY,&H3890,32,1,32,1,Coil duty
DWELL_TIME,&H3F00,16,1,16,1,Coil time

Dwell Duty shows, but no Dwell Time. Been too busy to investigate.

[Vetal]

Dwell Duty, Dwell Time - what are these tables?

[Matt]

how long to charge the coil for

one table is dependent on battery voltage for charge time and the other is against the amount of RPMs

higher RPMs will have a different charge time to lower RPMs