WHen you get to a point with the 6l80s, it will go backwards in feel...lol.
So, I am working on an E39 / T43. I did 10% on the four tables to start, and there was a noticeable difference, though still too sloppy. Then I tried 15% and I almost feel like it got worse?
$2800 '02 Silverado RCSB 5.3 L59
daily driver
8.2 @ 86 (1/8 mile) stock cam and spray
8.6 @ 84 (1/8 mile) cam and heads no spray