RomRaider

the correct values ​​are shown?

Looks like you’re using the updated FreeSSM?

The implementation in FreeSSM uses ‘steps’ as a simplification of the kPa tables that I posted earlier in the thread.

You are probably the first person to test the FreeSSM code (I couldn’t test it, I don’t have a 5EAT). Looks like FreeSSM is mainly working. I don’t think the numbers should be negative.

If you want Pressures instead of steps, you can use FastECU.

I’ll be interested to hear how you go adjusting the settings.

I downloaded and will test it today (5EAT on legacy JDM) ....

The "steps" in FreeSSM are the same as the "logged / entered byte" in the tables attached to the last post on page 18 of this thread. You need to cross reference "steps" and temperature to look up the kPa change in target pressure.

1st to 2nd DC Pressure Correction (none) - 75.
FreeSSM won't let me set it below -23.
my rom https://www.romraider.com/forum/viewtop ... 51#p173451


I didn't find how to change it in fastecu

Yes, the lowest that particular value can go is 52 (75-23). If you look at the attached charts from from page 18 of this thread, a value of 52 equates to approx 70kPa reduction in clutch pressure.

In FastECU it's in one of the menu items, it should be under Read, Set Params.

Hi folks,

Been lurking on here for years quietly watching and learning - I've got a EUDM 2007 Legacy 3.0R Spec B with the 5EAT.

I've tried attaching the .bin but getting an error saying "The extension bin is not allowed."

I don't see any options in FastECU to make any changes I'm assuming because this dump has no definitions currently.

MORE than happy to help dev any defs or whatever's needed so I can make this bloody thing behave itself. The gearbox is the only let down of this car.

You will all have to hold my hand a little though as I'm not brilliantly computer savvy (it took me months to understand how to navigate GitHub effectively....)

Should have read the rules

What is the transmission doing/not-doing that's letting you down?

It's a combination of three things that irk me.

One is the self learning, I grandad it around 80-90% of the time and it shifts fine and is lovely and smooth. However come up to a slip road and it needing full beans it's very lazy to grab the next gear and occasionally flares the 2-3 shift quite badly. If I beat on it for most of a tank it doesn't do it after learning "aggressively"

Two, shift points are utter crap for a 3.0 with a dead flat torque curve from 2500-6000 - I had it on the rollers and made 210 to all 4 tyres with some basic bolt ons and timing tweaks (I run it on 99 all the time) It doesn't need to drop 3 gears to make it to 70 by the end of the slip road but manually pedalling it to stop it from changing down too aggressively is getting very annoying.

Three, even with it self learned aggressively the shifting is slow and ponderous at best, it's no DSG I know but my 1966 Ford grabs gears faster (and harder) than this thing does when I want to get a shuffle on.

It's had multiple fluid changes and filter changes, checked all the data as best I can and it all seems happy - just too "soft"

There aren’t any definitions for TCUs, because modifying them is ‘frontier’ stuff at the moment - the TCU ROM needs to be dumped, then it needs some reverse engineering to locate key tables, and then changes can be made followed by a reflash.

Or, you can try changing some limited variables (eg: clutch target pressures) using FreeSSM or FastECU.

I tuned a Tribeca today and I suspect that increasing CET also affects gear downshifts. It looks like downshifts in middle load occur earlier when one increases CET.

I would like to contribute to this project. I have an 05 OBXT with the transgo shiftkit. What type of tests or experiment would be useful to the group?

Although not fully relevant to the tuning, I have both front/rear lsd installed from a 2005 sti on my 5eat and the center diff has been modified to be permanent rear wheel drive with the clutches now engaging the front wheels, so similar to MPT but flipped 180 degrees.

Welcome, great to hear!

The first step would be to figure out your ROM type (Hitachi/Denso) and get a dump of it using FastECU.

After that we would try and identify tables, change values, flash, log, see what changes and repeat.

Hello everyone! Maybe someone will be interested, I can upload the dump TG5D8CL2AA (sti gvf)