Hey guys, I have been trolling around here for awhile now and have learned alot from the threads here and over at Aktive Matrix so first thanks to all for the great info provided here.

To the car/problem:
I have a '06 SE with the following relevant mods:
-Bushcur 20GLT, stock WGA
-Buschur Deluxe FMIC
-Titek O2 Housing
-PTE 780's
-Buschur TBE catless
-EBC
-Intake

I went and did some logs today working from 15psi to 19psi and the car ran decent with some trace knock (1's or 2's sporadic in which I interpolated the timing map alittle better eliminated any knock). What I did notice is that 1) My load captured through evoscan does not seem to follow along with the amount of boost I am running (I am logging 2 byte load or at least I followed the tutorial to a T') 2) The load that is calculated and the timing that corresponds does not match up to the timing I am running in my timing map. For example:

In my log at 5000RPM in the 193 load site my timing is 0


This is obviously my high octane map:


Now I would think that if everything was OK that I should be seeing around 4 or 5 degrees respectively. Why would I be logging 0 degrees in timing? The only thing that I can think of is that since the car has been sitting in the garage for about 2 months that maybe the gas is crap or the gas was crap before I let the car sit and the car is pulling timing numbers from the low octane timing map. Here is my low octane map:


Also, the datalog I am attaching is from a 19psi pull, doesn't 180-190 in load seem low for holding 19psi? All thoughts are welcome, thanks in advance and if anyone would like me to send them a copy of my map to play around with or to give some advice on just shoot me a pm . Flash tuning is alittle new and fustrating for me coming from owning prior stand alone cars and having the ease of live tuning so please bear with me if these questions have easy/obvious answers .

 

Load will be off because of the Injector scaling is prolly 720cc on ur car, while Evoscan is calculating at 513cc.

Lean it a couple of points to achieve around 11.2 afrs

Turn the boost up to 22-23psi log the car. Use the same timing and come post the log.

 

adjust your injector size as Phenix said, I know mitsulogger is easy to do it in.
iow you are at a higher load than you think. work backwards, take your timing and see what load cell it fits in.
2 byte load may be available for your car, that would direct you to the correct cell even better. what you see on your log is not 2 byte load, I don't think. that is calc load based on some inputs including injector pw.

bad gas would show up as high knock and drop you into another octane map.

it looks like you are pretty conservative, you should be able to make some headway from your current map.

 

You said you were logging 2-byte, so that means you don't have to adjust anything in EvoScan due to your larger injectors.

I see that you pasted your High Octane Ignition Map 1. Did you copy this map into your #2 and #3 High Octane Ignition maps? My guess is that you didn't.

 

did you modify all 3 high octane maps? or just #1?

if you are only going to modify 1 map then use #2 as that gets used in either ECU selection.

otherwise make the same changes to all 3 maps..

 

Likely picking up 260 load, not 190 with your intake filter.

I do not believe in 2 byte maf load calculations using any of the two dataloggers. Trust the timing number, not the fabricated 2byte load figure.

 

Have you documented an incidence of 2-byte load not reflecting the load value being used by the ECU to determine the timing/fuel cell from which to pull these values? It has been my understanding, to this point, that 2-byte is *the* real load value (i.e. NOT a calculation) being seen by the ECU, and will therefore always be correct in selecting the proper cell in the timing/fuel tables.

 

i think TTP was refering to calculated load...

 

We use neither and do not believe in its accuracy.

 

We know that 2 byte load is the site that is being accessed to read the timing values from the map, so if you want to modify the timing you change that cell. However, the timing the engine finally runs may not be the same as that looked up from the timing map even if you have no knock sum, 100% octane value and all the high octane timing maps are the same. There are no doubt some other compensations going on - probably baro, IAT and coolant temp.

 

Does this mean that you're a supporter of Intelligent Design as well? :-)

 

I think you may be confusing 2-byte load with calculated load.

The 2-byte load, as Mr. Banks stated, is the real load number being used by the ECU. This has been verified through disassembly. There are no calculations by us being done here. It's simply logging the variables that hold this load number.


Eric

 

The log you have posted does not show 2 byte load in the column with that heading. It only shows load calac. Do you have a log with data in the 2 Byte load column?

MB

 

Yeah I just pulled a dumb move. Unchecked 2 byte mutload and checked calc load by accident and assumed that was the label it gave for it excel. My fault guys, I will come back in another thread to see if I can get some opinions on my progress with the map. Thanks guys!!!

 

also, if you want to know if your car is possibly interpolating your maps then log your octane value as well. If it's below 100 then it's possible that your bad gas theory is valid but it takes considerable knock to bring it off of 100.