ECU table functions and definition of tables
 

Would be great if we had definitions for the various tables and also what they do. I am still not clear on a lot of functions of this ecu, for example when it come to DI Fueling, there are three maps (Base,Normal,and Safe) what do these mean? I noticed that the data logged values are interpolated between the normal and safe tables. Another I am not sure about is in the speed limiter tables (Speed UNK) which is set at 240km/h. Something else that has me confused is the carious A,B,C,D etc tables and what causes a switch between them.

use romraider to view the tables, also bad noodle's subie tuning guide can help, as can just generally searching the romraider forums for any tables that confuse you.

Romraider is great yet there still isn't much explained in terms of table function and in some cases even the axis are yet to be defined. What would be great is if we have a table by table post with explanation of function. The Bad Noodle guide is great (read it a long time ago) but falls short on a lot of BRZ specific tables.

there are no comprehensive resources like that for the fa20 yet, still far too new and the ecu has only been opened up to the masses for a short time. really though there's nothing in there that's too hard to get with a bit of experimenting, just no one has written it all down yet.

if you have any specific questions, myself or others on the forum could probably answer them for you.

The problem is the shear amount of time it would take for any of us that understand the majority of the tables to do a brain dump and post that info etc etc. Romraider and ecuflash descriptions are the way to go.

I'm supposed to be working on porting the RR def over to ecuflash but have not had time. Most of the tables should not be hard to figure out but in some cases, like when it uses what timing map... if you search around that is still not fully understood on most 32bit subaru ecu's, etc.

Okay lets take one in particular that I am curious about. Its the VVT angle Base, Safe, Normal tables. What do you guys know about those and when they are used.

I heard the two cam tables types depends on iam value... I've not verified that yet, but that's the EcuTek description.

I have two data logs of vvt one with .98 IAM and the other with .45 IAM. In both cases the vvt values are nearly the same and seem to be interpolated between the safe and normal maps. Based on that I doubt IAM changes the vvt value much.