Fast Learn doesn't appear to start

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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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Sat, 06/26/2021 - 18:34

#1

m.delorenzis

Fast Learn doesn't appear to start

Hi Steve,

I have a 6l80e out of a VF commodore OS 24267577. I am running a Megasquirt ECU for the LS2 twin turbo and a TCM 2650 to send the torque signal and rpm to the 6l80e.

I was experiencing issues like hitting the limiter between 3rd and 4th until I changed the pressure pattern to use Y. Then it was ok which I found weird.

I recently have started hearing like a squeek but more of a squark if thats a sound when shifting from 4th to 5th under load. It is a stock transmission with stock converter. Any idea what this noise could be?

I have recently tried to do a fast learn with HP tuners but I don't get any feedback. I have read online people getting notice like its not at temp, but for me I don't get anything. It's made me question whether my brake signal is working correctly as I read you need to have your brake on.

I read in your site that it doesn't work for later OS's. Did I understand this correctly?

Would you know if my OS is too late? OS 24267577 I have also tried doing an entire write of a corvette OS 24256125

I am about to pull the engine out to rebuild it and I am going to attempt rebuilding the 6l80e but I wanted to confirm fast learn was ready to go when it was fresh. I don't want to put a fresh engine through shifts that hit the limiter.

Any advice is appreciated.

Thanks Marco

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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.