This happened on my old tunes from Jody. With the A/D counts on the throttle at 504 and higher, the 1st gear TC lockup speed was set at 16 mph. Anything below 504 was raised all the way up to 127.5 mph.
If the TC locked up, then it would make sense as to why it lurched forward like it did. So did it shift into 2nd and then lock, or do you think it locked the TC in first while I was spooling up?
I'm still going to try changing that table to see what happens. I might do it on my old tune to see if it makes a difference. I know how to duplicate the launch problem... just hold 1800+ RPM for longer than about 5-6 seconds.
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