6L90 Update for Tap Shifting

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NEW!!!

I will make one calibration change for an additional $100 per change. For example, changing a shift point for a given gear is $100 vs changing a shift point and a pressure setting would be $200. That value can be used towards the full custom tuning price.

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Mon, 04/27/2020 - 10:04

#1

quadstar87

6L90 Update for Tap Shifting

I have a '08 6L90 out of a truck that doesn't support hardwire TUTD. Want to flash the TECM with an OS/Calibration that supports it and am unsure how to know what's compatible! Can I write entire with HPT and try some other operating systems or do I run the risk of bricking it and having to pull the trans apart? Any help in figuring out the compatability matrix is much appreciated!

Also have a passthru that I could try to flash it with if HPT won't do it. I couldn't find any reliable details on which was required for this task.

Attached a PDF showing the current calibration details and Operating System.

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Click on the "SUBSCRIBE" tab to sign up. I will not respond to technical questions unless you are a paid subscriber. Calibration and Config files will not open directly from the site, they must be downloaded to your computer in order to open.

NEW!!!

I will make one calibration change for an additional $100 per change. For example, changing a shift point for a given gear is $100 vs changing a shift point and a pressure setting would be $200. That value can be used towards the full custom tuning price.