Minimum IPW Info AND Resolution patch

Reply Subscribe

Thread Tools

Search this Thread

May 26, 2018 | 04:44 AM

#46

Shinzon

Newbie

iTrader: (4)

Joined: Nov 2013

Posts: 60

Likes: 1

From: Illinois

5959004

Any one has the min ipw modifier for 59590004?

Jul 30, 2019 | 11:24 AM

#47

Wantthatevo123

Newbie

Joined: Aug 2017

Posts: 13

Likes: 0

From: Mesa, AZ

Quote:

Originally Posted by tephra

Hi All,

I already posted this in Evo1-9 forum, but X needs this too and is slightly different

First lets discuss the Minimum IPW.

This is the LOWEST IPW that the ECU will go DOWN to (other that 0ms of course)

The standard setting is 1.28ms. This is fine for injectors upto 1300cc/min.

However lets say you have some big *** injectors (2000cc). In order to idle at a decent AFR you would need to lower the minimum IPW past 1.28ms.

This is the first problem, the standard ECU will only allow jumps of 0.256ms, so you can use 1.024ms or 1.28ms.

This is a problem because 1.024ms is TOO low for some injectors to even operate at. For instance if you look at the InjectorDynamics ID2000 sheet you can see that @14v UNDER 1.5ms things start to get a bit hairy, the situation is even worse at 1.0ms :

Running a minimum IPW of 1.024ms on these injectors makes the idle really ****.

Obviously running 1.28ms gives a great idle, just at 11:1 AFR - which is horrible! So we need somewhere in between - which is impossible with the standard ECU configuration/code

The solution is to modify the ECU code to allow for greater resolution in the Minimum IPW.

First I want to post up the XML that lets you modify the Minimum IPW, these seems to work across a few different ROMID's please let me know if you DONT see 1.28ms and I will investigate:

Code:

<scaling name="IPW16:SHLL5" units="ms" toexpr="x*32*8/1000" frexpr="x*1000/8/32" format="%.3f" min="0" max="65" inc="0.256" storagetype="uint16" endian="big"/>
<table name="Minimum IPW SHLL5 (stock)" category="Misc" address="53002" type="1D" scaling="IPW16:SHLL5"/>

Go ahead, try and increase or decrease the value, you will see it jumps in 0.256 increments (an no ECUFlash wizards thats not because I have set the inc to 0.256

)

So as I said the solution is to modify the ECU to allow finer resolution for this variable.

Standard XML:

Code:

<scaling name="IPW16:SHLL0" units="ms" toexpr="x*8/1000" frexpr="x*1000/8" format="%.3f" min="0" max="65" inc="0.008" storagetype="uint16" endian="big"/>
<table name="Minimum IPW SHLL0" category="Misc" address="53002" type="1D" scaling="IPW16:SHLL0"/>

53040010:

Code:

<table name="Minimum IPW SHLL0 modifier #1 (0x5345 -> 0x5340)" category="Misc" address="2dd8e" type="1D" scaling="Hex16"/>
<table name="Minimum IPW SHLL0 modifier #2 (0x5945 -> 0x5940)" category="Misc" address="2db82" type="1D" scaling="Hex16"/>
<table name="Minimum IPW Code Path modifier #1 (0x7f09 -> 0x7f06)" category="Misc" address="2dd70" type="1D" scaling="Hex16"/>

526800xx:

Code:

<table name="Minimum IPW SHLL0 modifier #1 (0x5345 -> 0x5340)" category="Misc" address="2e02e" type="1D" scaling="Hex16"/>
<table name="Minimum IPW SHLL0 modifier #2 (0x5945 -> 0x5940)" category="Misc" address="2de22" type="1D" scaling="Hex16"/>
<table name="Minimum IPW Code Path modifier #1 (0x7f09 -> 0x7f06)" category="Misc" address="2e010" type="1D" scaling="Hex16"/>

526900xx:

Code:

<table name="Minimum IPW SHLL0 modifier #1 (0x5345 -> 0x5340)" category="Misc" address="2e0e2" type="1D" scaling="Hex16"/>
<table name="Minimum IPW SHLL0 modifier #2 (0x5945 -> 0x5940)" category="Misc" address="2ded6" type="1D" scaling="Hex16"/>
<table name="Minimum IPW Code Path modifier #1 (0x7f09 -> 0x7f06)" category="Misc" address="2e0c4" type="1D" scaling="Hex16"/>

55580006:

Code:

<table name="Minimum IPW SHLL0 modifier #1 (0x5345 -> 0x5340)" category="Misc" address="2e5ae" type="1D" scaling="Hex16"/>
<table name="Minimum IPW SHLL0 modifier #2 (0x5945 -> 0x5940)" category="Misc" address="2e3a2" type="1D" scaling="Hex16"/>
<table name="Minimum IPW Code Path modifier #1 (0x7f09 -> 0x7f06)" category="Misc" address="2e590" type="1D" scaling="Hex16"/>

So you need both sets of XML, the modified #1/#2 AND the "Minimum IPW SHLL0". Once you apply the changes in #1/#2 the first table ("Minimum IPW SHLL5 (stock)") will become meaningless since its based on the old scaling. Please dont confuse yourself

After you do the patch you will also need to reset your "Minimum IPW SHLL0" to 1.28ms, you can then increase/decrease at your leisure

Cheers
D.

Is this definition for minimum ipw available for 94170015? I installed RC1200s and my idle bounces constantly from 1000rpm -1400rpm. I'm wondering if this might resolve my issue.

Thank you kindly

Mar 1, 2021 | 10:58 AM

#48

10isace

Evolved Member

iTrader: (12)

Joined: Nov 2008

Posts: 1,058

Likes: 16

From: East of the Rockies

Quote:

Originally Posted by Shinzon

Any one has the min ipw modifier for 59590004?

+1 for 5959

Mar 3, 2021 | 02:13 AM

#49

crimson red

Evolving Member

Joined: Aug 2009

Posts: 284

Likes: 21

From: Hokkaido, Japan

Quote:

Originally Posted by 10isace

+1 for 5959

If you have, upload a stock 59590004 rom so that someone can make the definition for it.

Mar 3, 2021 | 06:13 PM

#50

10isace

Evolved Member

iTrader: (12)

Joined: Nov 2008

Posts: 1,058

Likes: 16

From: East of the Rockies

Quote:

Originally Posted by crimson red

If you have, upload a stock 59590004 rom so that someone can make the definition for it.

Here is the stock 59590005. Thanks!

Attached Files

59590005 USDM EVO X MR SST.bin (1.00 MB, 0 views)

Mar 4, 2021 | 02:06 AM

#51

crimson red

Evolving Member

Joined: Aug 2009

Posts: 284

Likes: 21

From: Hokkaido, Japan

Quote:

Originally Posted by 10isace

Here is the stock 59590005. Thanks!

Do you need definitions for 59590005, not for 59590004?

If so, as far as referring to other definitions, minimum ipw tables for 59590005 seems as below.

WARNING: It is not verified. USE IT AT YOUR OWN RISK.

Code:

<table name="Minimum IPW SHLL5 (stock)" address="53002" category="Fuel" type="1D" scaling="IPW16:SHLL5"/>
<scaling name="IPW16:SHLL0" units="ms" toexpr="x*8/1000" frexpr="x*1000/8" format="%.3f" min="0" max="65" inc="0.008" storagetype="uint16" endian="big"/>
<table name="Minimum IPW SHLL0" category="Fuel" address="53002" type="1D" level="2" scaling="IPW16:SHLL0"/>
<table name="Minimum IPW SHLL0 modifier #1 (0x5345 -> 0x5340)" category="Fuel" address="312e6" type="1D" level="2" scaling="Hex16"/>
<table name="Minimum IPW SHLL0 modifier #2 (0x5945 -> 0x5940)" category="Fuel" address="310da" type="1D" level="2" scaling="Hex16"/>
<table name="Minimum IPW Code Path modifier #1 (0x7f09 -> 0x7f06)" category="Fuel" address="312c8" type="1D" level="2" scaling="Hex16"/>

Mar 24, 2021 | 10:17 PM

#52

10isace

Evolved Member

iTrader: (12)

Joined: Nov 2008

Posts: 1,058

Likes: 16

From: East of the Rockies

Crimson red,
Thanks! That seems to work!

Apr 21, 2021 | 09:12 PM

#53

Kooldino

Evolving Member

iTrader: (1)

Joined: Apr 2007

Posts: 261

Likes: 0

From: Jersey

Anyone have one for a 2011 Ralliart? 5690007

Apr 22, 2021 | 03:45 AM

#54

crimson red

Evolving Member

Joined: Aug 2009

Posts: 284

Likes: 21

From: Hokkaido, Japan

Quote:

Originally Posted by Kooldino

Anyone have one for a 2011 Ralliart? 5690007

Glad to reply to your post.

Do you need the definition for 56940007?
If so, as far as referring to other definitions, minimum ipw tables for 56940007 seems as below.

WARNING: It is not verified. USE IT AT YOUR OWN RISK.

Code:

<table name="Minimum IPW SHLL5 (stock)" address="53002" category="Fuel" type="1D" scaling="IPW16:SHLL5"/>
<scaling name="IPW16:SHLL0" units="ms" toexpr="x*8/1000" frexpr="x*1000/8" format="%.3f" min="0" max="65" inc="0.008" storagetype="uint16" endian="big"/>
<table name="Minimum IPW SHLL0" category="Fuel" address="53002" type="1D" level="2" scaling="IPW16:SHLL0"/>
<table name="Minimum IPW SHLL0 modifier #1 (0x5345 -> 0x5340)" category="Fuel" address="3081a" type="1D" level="2" scaling="Hex16"/>
<table name="Minimum IPW SHLL0 modifier #2 (0x5945 -> 0x5940)" category="Fuel" address="3060e" type="1D" level="2" scaling="Hex16"/>
<table name="Minimum IPW Code Path modifier #1 (0x7f09 -> 0x7f06)" category="Fuel" address="307fc" type="1D" level="2" scaling="Hex16"/>

Last edited by crimson red; Apr 22, 2021 at 03:50 AM.

Apr 24, 2021 | 04:28 PM

#55

Kooldino

Evolving Member

iTrader: (1)

Joined: Apr 2007

Posts: 261

Likes: 0

From: Jersey

Quote:

Originally Posted by crimson red

Code:

<table name="Minimum IPW SHLL5 (stock)" address="53002" category="Fuel" type="1D" scaling="IPW16:SHLL5"/>
<scaling name="IPW16:SHLL0" units="ms" toexpr="x*8/1000" frexpr="x*1000/8" format="%.3f" min="0" max="65" inc="0.008" storagetype="uint16" endian="big"/>
<table name="Minimum IPW SHLL0" category="Fuel" address="53002" type="1D" level="2" scaling="IPW16:SHLL0"/>
<table name="Minimum IPW SHLL0 modifier #1 (0x5345 -> 0x5340)" category="Fuel" address="3081a" type="1D" level="2" scaling="Hex16"/>
<table name="Minimum IPW SHLL0 modifier #2 (0x5945 -> 0x5940)" category="Fuel" address="3060e" type="1D" level="2" scaling="Hex16"/>
<table name="Minimum IPW Code Path modifier #1 (0x7f09 -> 0x7f06)" category="Fuel" address="307fc" type="1D" level="2" scaling="Hex16"/>

Yes, sorry I meant 56940007. The XML seems to be pointing to the correct memory addresses, but I'm not seeing IPWs less than 1.4-1.5ms. Hmm. This usually works without issue on other ROM IDs.

Apr 25, 2021 | 04:37 AM

#56

crimson red

Evolving Member

Joined: Aug 2009

Posts: 284

Likes: 21

From: Hokkaido, Japan

Quote:

Originally Posted by Kooldino

Yes, sorry I meant 56940007. The XML seems to be pointing to the correct memory addresses, but I'm not seeing IPWs less than 1.4-1.5ms. Hmm. This usually works without issue on other ROM IDs.

I agree that these addresses seem to be correct(checked the codes again).
If the other ROMs for ralliart sst work with these patches without problems, it is even more unusual.
So far have no idea.

Last edited by crimson red; Apr 25, 2021 at 07:16 AM.

Apr 2, 2023 | 10:30 AM

#57

PNTuned

Newbie

Joined: Apr 2023

Posts: 1

Likes: 0

From: Kenya

Any one has the min ipw modifier for 56950008?
"Minimum IPW SHLL0",
"Minimum IPW SHLL0 modifier #1
"Minimum IPW SHLL0 modifier #2,
"Minimum IPW Code Path modifier #
"Cranking IPW

Thanks