So which load values (corrected or uncorrected) is the ECU actually using when it does its lookup for the timing and fuel maps? Thats all I'm concerned with.

 

That's all any of us are really concerned with, but answering that question is tough. The "corrected" 2byte load i have been using has worked fine for tuning. I have not had any issues using this in the last month. I completely re-tuned the car after porting to the 96530006 ROM from the original 96940001 ROM and have not seen any weird anomalies. It's hard to say what load the ECU is actually using to look up ignition/fuel. Maybe somebody with more ECU disassembly experience can chime in and enlighten us.

 

well the corrected vs uncorrected argument is kinda a non-issue.

at the most they will be within 20 points difference, more like 10.

So when tuning if you sorta take that fact into account you will be fine.

Right now in terms of addressing:
LOAD_Temp_Compensated = Load_Raw + 2
LOAD_Baro_Compensated = Load_Raw + 4
LOAD_Temp_and_Baro_Compensated = Load_Raw + 6

In terms of usage:
Fuel maps will either use Load_Raw OR LOAD_Temp_and_Baro_Compensated depending on an unknown(to me) condition

Ignition Maps will either use LOAD_Baro_Compensated OR LOAD_Temp_and_Baro_Compensated depending on the MAF IAT.

 

When you say " + 2" what do you mean exactly(? Thanks, i'm trying to connect all the coding dots. I'm a tuner, i know very little about code. haha

 

well if the address of LOAD_Raw is 0xffff8488 then LOAD_Baro_Compensated is that + 4, or 0xffff848c

 

Do you know what standard un-corrected 2 byte load would be from Raw load? Or are the two, one in the same? According to the info you just gave me, the 2byte load i'm using in my MUT table is actually LOAD_Temp_and_Baro_Compensated.

 

load raw = uncorrected load

 

So, if i change my MUT table back to Raw_Load, will i still be able to log it as 2-byte? I'm just trying to log 2byte uncorrected.....sorry for all the questions. I want 2byte to match 1byte.

 

all of the afore mentioned loads ARE 2byte.

so in my previous example if you changed your MUT00 to 8488 and MUT01 to 8489 then you would be logging load raw(or uncorrected load) in a 2byte format.

it is an example only, the addresses are not specific to your rom... but the +2, +4, +6 holds for any CT9A..

 

Got it. So is 1byte load Load_Raw? I'm assuming it is, since it's significantly higher than my LOAD_Temp_and_Baro_Compensated 2byte i have been logging. I think, knowing what i now know, i would rather just keep using the LOAD_Temp_and_Baro_Compensated 2 byte load, rather than Load_Raw and keep in mind the differences between them all and what the ECU is using for each(Fuel/Ignition).

I will update the wiki with the correct info for the 2byte loads in 96530006. BTW, i just figured out how to read Hexidecimal!! woot!! Small victories man! lol

 

1byteload is a 1byte version of LOAD_Raw yes...

Load_Raw will usually be the same as Temp or Temp+Baro corrected up until peak boost, then it will deviate by about 10-20 points (with load raw being higher)

 

Exactly as i thought. I updated the wiki for ROM 96530006.

 

I'm using tephra 510 96530006 in my 2g eclipse. The 1byte load is flat lining (maxing) at 276.9, and it's staying there for a long ways in my log. I saw the limits set in evoscan were 270, so I raised it to like 400 or something, but that didn't help. I changed from 1.2 multiplier to 1.3 (yes in evoscan AND my flash with ecuflash); I know it probably doesn't have anything to do with that (since 1.2*255=306), but I thought I'd give it a shot. Could it be something with my 2g MAS or something? My AFR's aren't getting lean or anything, so it must be reading higher. I haven't yet logged 2byte load, or 2byte MAS Hz. Usually the load follows along right with injector pulse width, but my PW still rises slightly after the load flat-lines.

I'm running a 16G at 31psi falling to around 25 at the peak hp of 5500rpms. BC272's, E85, RC750's, Evo3 style IM, SS o2 housing, 3" exhaust.

 

can you log 2byte load for us? and see if that gets capped?

 

so now i just log "ecu load" instead of "2byte load mod"?