TephraMod V7
Evolving Member
Joined: Feb 2008
Posts: 214
Likes: 1
From: South Africa
Excellent work guys....
One question.
I downloaded number 4 of Phenem's modified Roms.
Since the default is now set to PSI based boost, how do I change back to load.?
This is what I see when I want to change over, doesn't seem right.
It seems there may be something missing there to make the switch over to Load?
Thx
Evolving Member
Joined: Sep 2009
Posts: 123
Likes: 0
From: Creston, Iowa
What I think Chris meant is, from the factory, the boost control is load based. However, the load value the boost control system uses is SLIGHTLY different from the load value the timing/fuel maps use. This is what he is referring to as the "stock" boost control system.
This was later patched to reference the same load value that the timing/fuel maps use. This is what he is referring to as the "2 byte" boost control system. Although that's a bit misleading/incorrect. What he should have said is the "common load"or "standard load" boost control system. But yes, the values of this "common load" does match up with what we all came to know as "2 byte load" and that's the point.
As far as 2 byte vs. 1 byte... the difference is only for logging. They both reference the same value, as far as the ECU is concerned for the various maps and for the actual tune. 1 byte exists as a logging improvement only.
This was later patched to reference the same load value that the timing/fuel maps use. This is what he is referring to as the "2 byte" boost control system. Although that's a bit misleading/incorrect. What he should have said is the "common load"or "standard load" boost control system. But yes, the values of this "common load" does match up with what we all came to know as "2 byte load" and that's the point.
As far as 2 byte vs. 1 byte... the difference is only for logging. They both reference the same value, as far as the ECU is concerned for the various maps and for the actual tune. 1 byte exists as a logging improvement only.
Im a day late, I missed this somehow. Anyways, great work tephra and PheNem and JoT (anyone else not mentioned)!!
Thank you!
donation sent.
Thank you!
donation sent.
Last edited by Evo_Jay; Oct 11, 2009 at 01:32 AM.
Tephra will need to answer these questions. I am using psi based boost control without any issues so I am unsure...
Excellent work guys....
One question.
I downloaded number 4 of Phenem's modified Roms.
Since the default is now set to PSI based boost, how do I change back to load.?
This is what I see when I want to change over, doesn't seem right.
It seems there may be something missing there to make the switch over to Load?
Thx
One question.
I downloaded number 4 of Phenem's modified Roms.
Since the default is now set to PSI based boost, how do I change back to load.?
This is what I see when I want to change over, doesn't seem right.
It seems there may be something missing there to make the switch over to Load?
Thx
Have the throttle hang issues been solved in this release? Do we need to modify the decel fuel cut and idle stepper look up tables?
For those who do not know what I am talking about the thread is here:
https://www.evolutionm.net/forums/ec...ttle-hang.html
For those who do not know what I am talking about the thread is here:
https://www.evolutionm.net/forums/ec...ttle-hang.html
concerning psi or load based boost control:
its my interpretation that you go to the blued area under single turbo boost, where it says CHOOSE LOAD OR PSI .....
At this point there may be a better way but I would work back from the thread where MRfred showed how to implement psi based boost control.... reverting back to the designations that that thread changed from. Except now you would look to change from the 96530006 xml even if that was not your original xml.
Because its from that thread that the current entries come from.
OOOPS, its right there, just change the values to suit!
concerning 1 byte and two byte load reading, thats a nike thing, just try the rom, I think your worries are groundless.
I'm not the sharpest knife in the drawer so take this post with a grain of salt.
its my interpretation that you go to the blued area under single turbo boost, where it says CHOOSE LOAD OR PSI .....
At this point there may be a better way but I would work back from the thread where MRfred showed how to implement psi based boost control.... reverting back to the designations that that thread changed from. Except now you would look to change from the 96530006 xml even if that was not your original xml.
Because its from that thread that the current entries come from.
OOOPS, its right there, just change the values to suit!
concerning 1 byte and two byte load reading, thats a nike thing, just try the rom, I think your worries are groundless.
I'm not the sharpest knife in the drawer so take this post with a grain of salt.
Last edited by nothere; Oct 11, 2009 at 11:50 AM.
Excellent work guys....
One question.
I downloaded number 4 of Phenem's modified Roms.
Since the default is now set to PSI based boost, how do I change back to load.?
This is what I see when I want to change over, doesn't seem right.
It seems there may be something missing there to make the switch over to Load?
Thx
One question.
I downloaded number 4 of Phenem's modified Roms.
Since the default is now set to PSI based boost, how do I change back to load.?
This is what I see when I want to change over, doesn't seem right.
It seems there may be something missing there to make the switch over to Load?
Thx
USDM cars will basically have 2 rom's from now on;
96530006 for all USDM evo 8's
88590015 for all USDM evo 9's
Has anyone implemented the SD ROM yet? I had just started setting it up on another rom when V7 was released and starting from scratch again is a little overwhelming (it doesn't help that I have a hyperactive 3 year old hovering around my laptop right now). Before I get too deep into it, are all the setup steps essentially the same?
Might I suggest adding the rear O2 sensor heater disable to this patch as well?
Open up the ROM, navigate to the "Mods" section, change "Rear O2 Heater Patch" from "4A0B" to "0009"
My rear O2 has been replaced with the wideband.
This might also work but I need to confirm the address!
Code:
<table name="Rear O2 Heater Patch" category="Mods" address="2c62a" type="1D" scaling="Hex16" />
My rear O2 has been replaced with the wideband.
This might also work but I need to confirm the address!
Code:
<table name="Heater CEL" category="Rear O2" address="2c61e" type="2D" level="2" scaling="blobbits"> <table name="Bit values" type="Static Y Axis" flipy="true" elements="8"> N/A N/A N/A N/A Rear O2 Heater CEL Enable N/A N/A N/A </table> </table>
Last edited by IB Biddle; Apr 7, 2016 at 02:07 PM.
Been there for ages, was in v5.10 also. Look in the Tephra Mod Options Section to turn it on or off.