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Old 11-24-2016, 02:41 PM   #1
KoolBRZ
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Join Date: May 2014
Drives: Silver 2013 BRZ Ltd Auto 45,000 mi
Location: Vancouver, WA.USA
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Garage
Modding your Calculated Torque tables for better shifting, for A/T's only.

Because the TCU for these cars hasn't been cracked yet, I've started learning how to affect it with the ECU's programming, in particular, the Calculated Torque tables A and B, in the Drive By Wire section.

I started simply by making both tables the same, and moving the contents of the columns, one column to the left, and saving it as +10. Then, starting from the same original file, I moved the contents of the columns, one column to the right, saving it as -10. That gave me three tunes to compare, +10, original, and -10.

I thought that the TCU would shift later, when it was told it was under a bigger load, but that was wrong. The TCU short-shifted so badly that my wife remarked on it, saying she didn't like how it was lugging the engine. So, the +10 tune was a bust. The original tune was better, but not good enough. The -10 tune was better, however, so I started using lower and lower numbers. Telling the TCU I was barely using any power in the lower loads and rpms.

Here are pics of the original table, and my latest, tested, table. I'll be testing even lower tables later today or tomorrow.
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