jcsbanks

I mean 8 values, each of 1 byte.

The air and water temperatures are in the 100-150 range IIRC, increasing these to 255 would increase the limit

JohnBradley

iTrader: (30)

Confirmed.

Because I can alter the load my car sees for a given boost level via the MAFT Pro VE table (altering the global fueling actually) I artificially made it run higher load than I normally have it set (in order to keep the resolution at 30psi under 330 load) I was able to get it to read over 400% load.

Maxing the tables allows for a max theoretically load clip of 1507%

All we need now is a subroutine to run an injector driver and 4 more injectors and the stock ECU > Standalone for the most part.

Ted B

iTrader: (6)

If someone can come up with a workable solution for the 380 load cap aside from resorting to a MAFT, that would be most useful. As it is, strange things seem to happen when we 'hit the ceiling'.

JohnBradley

iTrader: (30)

Ted,

Sorry...the MAFT was only for artifically making it exceed 380. My point is altering the tables did in fact allow it to exceed 380 and not hit the ceiling.

I havent looked for this in any other ROMs, so perhaps some of the better disassembly guys can start that task.

oldevodude

iTrader: (3)

What about the MAF Size in ECUflash? Could the MAF size be changed to make the ECU think that more airflow coming is in less? Isn't this what is being done with MAFT Pro? In the Ford and Chevy world it is not uncommon for them to use "clamping" resistor pack in the MAF to allow more air in before hitting the 5volt max threshold. Hope this makes sense and is maybe of value. I have been meaning to test changes to the maf size in ECUflash but really have no need at my current power and mod level.

I thought the secondary injector idea would be cool also in that you could keep the factory injectors and simply drive a second set on top of factory. APR makes a manifold tapped for a second set of injectors and maybe others do as well. Once again no need for me as my 120lb. Lucas injectors are all dialed in and running better than my old FIC. I believe might be fuel delivery when my Red arrives. Off topic so I'll shut up now

JohnBradley

iTrader: (30)

Down and dirty for the IX 15 ROM:

<table name="Load modifier Water Temp" category="Misc" address="2d94" type="2D" level="1" scaling="uint8">
<table address="70c2" elements="8" scaling="Temp"/>
</table>

<table name="Load Modifier Air Temp" category="Misc" address="2da2" type="2D" level="1" scaling="uint8">
<table elements="8" scaling="Temp"/>
</table>


edit per JC suggestion

KevOVIII

iTrader: (10)

Another awesome find, jscbanks!

Can someone please figure out the tables for 96530006? Thanks in advance.

jcsbanks

Thanks for confirming it works Aaron, are you satisfied that the fuelling and timing were behaving as they should once the limit was moved? I wouldn't bother listing the load modifier vs RPM table since it is maxxed out anyway - avoids confusion.

casper980

iTrader: (6)

Load ~ Boost pressure - 1 Atmosphere in KPA

100 KPA = 1 bar = ~14.5 psi = 1 Atmosphere of pressure

0 - 100 KPA = Off boost

100 + KPA = On Boost

So 380KPA = 2.8 Bar = ~ 40 PSI!!

Hope your on C16

Ted B

iTrader: (6)

So John and JC,

If we raise the values in the air and water temp load multipliers, does this allow us to run AND log loads greater than 380 without issue?

jcsbanks

That is what I believe from the code, and JohnBradley/Aaron seems to be confirming is the reality in the logs.

Ted B

iTrader: (6)

So, if someone can disassemble those two tables for 94170015, I just set the two values to "255", and I should be able to transcend the 380 load ceiling that is causing misfire.

Is there anything I can do to facilitate disassembly of that ROM?

Mellon Racing

iTrader: (38)

I was seeing 380kpa limit at 32.5psi with the honeycomb in place, now that I've removed it I'm seeing 365kpa max at the same pressure ~600awhp on 93 octane pump gas.

Drifto

iTrader: (6)

One very easy fix for you guys that are seeing the max value of 380 is to remove the Karmon sensor from the car and turn it over. You will see a waxy "plug" on the bottom of the sensor. Scrape away the "wax" until you can see the slotted screw that reside there. Back the screw out until flush. If you look through the honeycomb screen you see that the "bump" that resided in the rectangle at bottom portion of the sensor is now gone. This will effectively allow more air to bypass the actual sensing unit in the MAF and drop your max load. Obviously, most of you will have to adjust your entire map as this will alter fuel and timing values based on the "white" lie you are now telling the ECU. In a car with stock timing and fuel maps it is very effective at making power since the factory fuel and timing maps are super conservative as load cell shift to the right. This mod brings things back to the left side of the map leaning out and advancing timing. Since everyone in this forum has moddified their maps, I would not advise blindly doing this.
Before any real tuning devices were available for the Evo 8, a buddy ,who owned an Evo, and I went to a dyno to see what all his BPU mods could muster. After reaching what appeared to be a limit we adjusted this screw on the bottom of the MAF and were able to extract another 16whp.

jcsbanks

9417xxxx and 9653xxxx, pls confirm these work as expected (set all to 255):

<table name="Load modifier Water Temp" category="Misc" address="3394" type="2D" level="1" scaling="uint8">
<table elements="8"/>
</table>

<table name="Load Modifier Air Temp" category="Misc" address="33a2" type="2D" level="1" scaling="uint8">
<table elements="8"/>
</table>