RomRaider

Looking for disabling EGR valve for NA ecu.
Has anybody found configuration bytes to deactivate EGR algo for Denso ecu ?
Ignition timing should be dependable on EGR dilution.
I prefer to completely disable EGR system and it is feasible for Hitachi NA ecu's.

Most probably EGR table
D2ZS002C 3.0R UK Legacy ROM

ROM:0007A280 load_flt_7A280: .float 3.4999999e-1, 4.4999999e-1, 5.4999995e-1, 5.9999996e-1
ROM:0007A280 ; DATA XREF: ROM:0005EFD4o
ROM:0007A280 .float 6.9999999e-1, 7.9999995e-1, 8.9999998e-1, 9.4999999e-1
ROM:0007A280 .float 1.0, 1.0899999, 1.2199999, 1.3499999
ROM:0007A2B0 rpm_flt_7A2B0: .float 9.0e2, 1.0e3, 1.2e3, 1.4e3, 1.6e3, 1.8e3, 2.0e3
ROM:0007A2B0 ; DATA XREF: ROM:0005EFD8o
ROM:0007A2B0 .float 2.2e3, 2.4e3, 2.6e3, 2.8e3, 3.0e3, 3.2e3, 3.4e3
ROM:0007A2B0 .float 3.6e3, 4.0e3
ROM:0007A2F0 EGR_word_7A2F0: .data.w 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
ROM:0007A2F0 ; DATA XREF: ROM:0005EFDCo
ROM:0007A2F0 .data.w 0, 4, 5, 5, 8, h'A, h'15, h'19, h'1C, h'1F, h'1E, 0
ROM:0007A2F0 .data.w 0, h'C, h'E, h'F, h'12, h'16, h'1C, h'1F, h'22, h'25, h'1E, 0
ROM:0007A2F0 .data.w 0, h'E, h'16, h'18, h'1B, h'1F, h'23, h'25, h'28, h'2B, h'23, 0
ROM:0007A2F0 .data.w 0, h'E, h'19, h'1B, h'21, h'28, h'2A, h'2B, h'2D, h'2B, h'28, 0
ROM:0007A2F0 .data.w 0, h'E, h'19, h'1E, h'28, h'2E, h'2E, h'2C, h'2D, h'29, h'28, 0
ROM:0007A2F0 .data.w 0, h'E, h'19, h'20, h'2D, h'34, h'32, h'2D, h'2D, h'2A, h'2A, 0
ROM:0007A2F0 .data.w 0, h'E, h'1C, h'24, h'33, h'34, h'33, h'31, h'2E, h'2A, h'2A, 0
ROM:0007A2F0 .data.w 0, h'14, h'24, h'2B, h'34, h'34, h'34, h'34, h'34, h'34, h'34, 0
ROM:0007A2F0 .data.w 0, h'19, h'24, h'2D, h'34, h'34, h'34, h'34, h'34, h'34, h'34, 0
ROM:0007A2F0 .data.w 0, h'1C, h'24, h'2F, h'34, h'34, h'34, h'34, h'34, h'34, h'34, 0
ROM:0007A2F0 .data.w 0, h'1C, h'24, h'2D, h'34, h'34, h'34, h'34, h'34, h'34, h'34, 0
ROM:0007A2F0 .data.w 0, h'1C, h'25, h'2B, h'34, h'34, h'34, h'34, h'34, h'34, h'34, 0
ROM:0007A2F0 .data.w 0, h'20, h'2A, h'31, h'34, h'34, h'34, h'34, h'34, h'34, h'34, 0
ROM:0007A2F0 .data.w 0, h'23, h'30, h'34, h'34, h'34, h'34, h'34, h'34, h'34, h'34, 0
ROM:0007A2F0 .data.w 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

EGR is disabled at WOT.

Diesel got a hysteresis for switching on and off depention on IQ and engine speed.

To switch the EGT of you need to set the switch on hysteresis on -1 mm³/h and the switch off hysteresis to 0 mm³/h like it is made at loads higher 50%.

Work well, without know the switch of the statemashine of EGR

There is 4 step threshold for EGR valve used for ignition correction. I may dicrease tabulated values for EGR vs load\rpm below.
This is a partial solusion I would like to find the complete one.

Shame on me I am still failing to locate the switch to shut EGR off for Denso. It definately should exist.