RomRaider

whats the possibility of getting someone to make the torque management tables available? the legacy GT's and outbacks use the bullit proof 5 speed auto. i feel like we could get away with a minimal amount of spark retard, or possibly none at all due to the brute strength of this trans. the car would pick up considerably with this mod as long as the trans is up to the task. thoughts? availability?

e

when tuning LS1's this is one of the first things people go after when doing a performance tune. we have done this with a lot of success on other car types, sure would be cool if we had access to the same tables in the subarus.

e

anyone?

e

Are you talking about when the TCU sends its Torque Limit signals to the ECU? I wasn't aware that there was a ignition retard built in but I do know that during the shift it does do a fuel cut.

It would be nice to find the code in the ECU that handles signals from the TCU so see what we can adjust. However I do not believe any transmission is "bullet proof" so I prefer to cut timing and boost near the shift point to extend transmission life.

the 5EAT/ nissan part RE5R05A is as close to bulletproof as a japanese auto trans gets.

it sees duty behind all VQ-series V6 and the 4.5L v8, AND the 5.7L titan truck engine.

its a stout piece, for sure.


anyway, yes, the LGT/OBXT has an "AT timing retard" signal that goes to 1 while shifting.

yeah id really love access to those tables/settings to tune some of the feel back into the shifts..... its set up so spongy from the factory that you can hold a steady 2k rpm and never tell the transmission has shifted thru several gears. im not trying to break things, but i see a ton of room for improvement in these tables. if you have played with the LS1 ECU's, then you know the torque management tables yield HUGE seat of the pants gains, even without completely zeroing them out. i understand theres a risk of breaking things, but i feel the 5 speed auto is up to the task, and im willing to use my outback XT to find out.

e

just checking back in to see if anyone doing the code decyphering, had interest in making these options available in future releases. i know its probably not the norm, but im still doing a lot of custom tunes in automatic cars.....

e

i was lucky enough to get a peek at the newest version of COBB's tuning software last week when a tuner at another shop stopped by. it was pretty cool to see their software and how it operates. they have some really awesome real time tuning features as well as the ability to ghost the current cell from any table during operation so you know what cell is currectly being used while your tuning in real time.

also, they have defined the shift retard table i was originally asking about when i started this post. the 2d table gives you control over the amount of ignition retard vs RPM if i remember correctly. would be really great to get shorter more responsive shifts on the automatic cars. way back when i first asked about this was january of 07, has anyonemade any progress on adding this table as part of a future release of rom raider?

e

Nope, not really a high priority as most tuners aren't tuning Subaru ATs, but I'll look at it down the road (the current ECU defs are already finalized). Anything I find is going to be through my own analysis and not based any commercial software's discovery of some table and their explanation of what it does.

fair enough. that is a very worthwhile work ethic. i will add my own .02. my forester is an auto. and i would benefit greatly from the same tables and eventual tcm control. the tcm uses the same flashwrite software as the ecm. accesses the same way. we (subaru dealers) have several reflashes at our disposal. it seems like logical progression to begin opening those up. esp. considering the fact that the 09 forester xt only comes as a 4eat, and nearly all the lgts (except the spec b) are auto's these days. automatics get overlooked by the go fast import world, but i love mine. it is the fastest way down a straight track, sits in traffic well, and if some revisions could be made to the sportshift tables, there is potential for the auto to shift faster, harder and more consitently than a manual in the twisties. i know this because at the track i do a minor tweak to my wiring to ramp line pressure to it's max. there isn't a manual transmission that will touch a 4eat with 100% duty line pressure.

Well, we are not able to read/write the TCM so the only thing that can be modified is that on the ECU side - things like ign retard/fuel cut request from the TCM, etc.

understood. that would be an awesome start. but what is the difference in tcm flashwrite and ecm flashwrite. as i stated previously, the tcm is accessed the same way as the ecm. how/can that address be accessed using ecuflash? is this a matter of starting from scratch and reverse engineering the tcm flashwrite in a similar manner to the ecm flashwrite that is duplicated here?

You can't. Colby would have to figure it out and add that capability to Ecuflash.

Im sure master 2192 has seen this already, but for those of you that have not.

Read down the page after the write up for the VB.

http://forums.nasioc.com/forums/showthr ... ?t=1166360

I've been looking for this table for a while now too.
Do you know which model/year you saw the table available for with the Cobb software?