Minimum IPW Info AND Resolution patch
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10isace (Mar 1, 2021)
#47
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:
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:
53040010:
526800xx:
526900xx:
55580006:
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.
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"/>
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"/>
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"/>
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"/>
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"/>
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"/>
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.
Thank you kindly
#51
Evolving Member
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.
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"/>
The following users liked this post:
10isace (Mar 24, 2021)
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crimson red (Mar 30, 2021)
#54
Evolving Member
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.
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.
#55
Evolving Member
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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.
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"/>
#56
Evolving Member
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.
#57
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
"Minimum IPW SHLL0",
"Minimum IPW SHLL0 modifier #1
"Minimum IPW SHLL0 modifier #2,
"Minimum IPW Code Path modifier #
"Cranking IPW
Thanks
#58
min IPW address for 52370024
Anyone has min IPW address for 52370024
"Minimum IPW SHLL0 modifier #1
"Minimum IPW SHLL0 modifier #2,
"Minimum IPW Code Path modifier #
Thanks
"Minimum IPW SHLL0 modifier #1
"Minimum IPW SHLL0 modifier #2,
"Minimum IPW Code Path modifier #
Thanks
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jcsbanks
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