I have a GM connect and cruise LT4 with the 8L90E package in my '72 Nova. The default tune for the trans is horrible, in fact it's so bad I can't even drive it. I have had an online tuner attempt to tune it with no luck. Now, I want to try and fix this myself. I have found that others have used the blue cat application and I would like to use it as well but there is not an option to export for the 8L90E and not a lot of info that I've found on using blue cat with this trans. So, has anyone here used blue cat and if so, can you give me some guidance on how to make this work? There is not an option in blue cat to select the 2017 Corvette (this is the vehicle the vin from the ecm shows) for the shift slope.
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I have also attached the latest tune.
Thanks
Jim