Wall Flow Tables vs Injector Size?

[Torque]

I was just wondering if some of the Wall Flow Tables should also be adjusted when you change the injector size?
(They seem to be working in the % or mS range)

[Matt]

Not sure. Never needed to touch them. If using Total Injection Multiplier there definitely is no need with updated firmware since TP scales stay the same

[Torque]

Hi Matt,

Is that total multiplier now what NT comes with?
(is that documented?)

I'm still on K adjustment, and don't really want to do a complete re-tune of my maps and scalers.

[Matt]

Yes it is something I've developed for Z32 but there is an apparent issue with Z32 + RB25 which I'm trying to resolve so I'm holding off releasing that for now

[RomChip200]

I just switched to the latest version of Nistune and discovered "Wall Flow" enrichment tables.

I'm not familiar with "Wall Flow" concept or compensation.

What mechanical/chemical/combustion effect does it refer to ? Could someone elaborate about it ?
Particularly the link with TPS.

As I run fully E85 and my TP scales are completely redesigned, I probably need to adjust these.

[RomChip200]

Btw, there are some duplicated (wrong !?) addresses inside Z32_VG30_256_E.adr related to Wall Flow .....

7700
7710
7720
7730

I think these are effectively "Wall Flow" correction tables as 7700, 7710, 7720 and 7730 tables are effectively interpolated against TPS (filtered).
7740 and 73E0 are effectively interpolated against engine_temp
76D0 and 76E0 are effectively interpolated against rpm
76F0 contains also a 16-values table that is interpolated against engine_temp

6E60, 6E70, 6E80 and 6E90 are invalid on Z32.

Code: Select all

#Section 2 Accel
WALL_FLOW_COMP_ACCEL_TEMP,&H73E0,16,1,16,1
WALL_FLOW_COMP_ACCEL_TPS,&H7710,16,1,16,1
WALL_FLOW_COMP_ACCEL_TPS_DELTA,&H7700,16,1,16,1
WALL_FLOW_COMP_ACCEL_RPM,&H76D0,16,1,16,1

#Section 3 Decel
WALL_FLOW_COMP_DECEL_TEMP,&H7740,16,1,16,1
WALL_FLOW_COMP_DECEL_TPS_DELTA,&H7720,16,1,16,1
WALL_FLOW_COMP_DECEL_TPS,&H7730,16,1,16,1
WALL_FLOW_COMP_DECEL_RPM,&H76E0,16,1,16,1

KNOCK_VOLT_LIMIT_MAIN_CYL1,&H7700,16,1,16,1
KNOCK_VOLT_LIMIT_MAIN_CYL3,&H7710,16,1,16,1
KNOCK_VOLT_LIMIT_MAIN_CYL4,&H7720,16,1,16,1
KNOCK_VOLT_LIMIT_MAIN_CYL2,&H7730,16,1,16,1
KNOCK_VOLT_LIMIT_REG_CYL1,&H6E60,16,1,16,1
KNOCK_VOLT_LIMIT_REG_CYL3,&H6E70,16,1,16,1
KNOCK_VOLT_LIMIT_REG_CYL4,&H6E80,16,1,16,1
KNOCK_VOLT_LIMIT_REG_CYL2,&H6E90,16,1,16,1

[RomChip200]

Should be better this way:

Code: Select all

KNOCK_VOLT_LIMIT_MAIN_CYL1,&H7300,16,1,16,1
KNOCK_VOLT_LIMIT_MAIN_CYL2,&H7310,16,1,16,1
KNOCK_VOLT_LIMIT_MAIN_CYL3,&H7320,16,1,16,1
KNOCK_VOLT_LIMIT_MAIN_CYL4,&H7330,16,1,16,1
KNOCK_VOLT_LIMIT_MAIN_CYL5,&H7340,16,1,16,1
KNOCK_VOLT_LIMIT_MAIN_CYL6,&H7350,16,1,16,1

KNOCK_VOLT_LIMIT_REG_CYL1,&H7360,16,1,16,1
KNOCK_VOLT_LIMIT_REG_CYL2,&H7370,16,1,16,1
KNOCK_VOLT_LIMIT_REG_CYL3,&H7380,16,1,16,1
KNOCK_VOLT_LIMIT_REG_CYL4,&H7390,16,1,16,1
KNOCK_VOLT_LIMIT_REG_CYL5,&H73A0,16,1,16,1
KNOCK_VOLT_LIMIT_REG_CYL6,&H73B0,16,1,16,1

[Matt]

I'll check it out. The knock tables were likely copied from 16 bit version

Raised bug report
http://www.nistune.com/mantis/view.php?id=169

[Matt]

Resolved for next build