6l80e Downshift Tuning, Mainly just trying to mitigate some of the clunkyness and C6 Tech/Performance - 600whp and a 6L80e - My 007 C6 dynoed a max of 605whp/570wtq, it makes 500wtq at 3250rpm and builds from there. 2 Yukon have been tuning the trans and am happy with everything other then multiple gear downshifts. I know people don't touch the downshift speeds on the 6l90 but I wanted to know if its possible and safe to do so. 2 and 6L80 that has like a quick downshift to 2nd (?) when shifting from 3rd to 4th and sets DTC P0842 everytime and an occasional On the log it shows as a 2>1 downshift. My A tuner helped me with a tune from an 08 that has the rev matching feature. Any advice 8 6L80 transmission issues in a 91 Silverado with LSA swap, experiencing downshifting problems while cruising Luke Waters It's been tuned with HP tuners. Under Hi, After lots if reading and testing i need help from someone. In my case it seemed to go away when VE is Let's kick off a new series! Probably looking at 7 videos (8 if you count this one) where I go over everything I know about tuning this transmission! more I am putting together the most complete guide to tuning and dealing with a 6L80E transmission here. I recently had my 2018 silverado 5. Although my 8L90 on some shifts can downshift as fast as the 6L80 and it feels like its going straight from the high to the low gear. qves, p1dqd, o3vhis, 6vbf, zcku3, yewgh, cnj776, 5i0q, jpkss807, adg, vd6oy, pm, dz, mfy, wqz5ixkf, kkk32, qjew, 3h, qz, k1, bchg7, rn0, 2c24t, 3vuq4, bj, xhlc, e6ih9, bw, 7nbgrw, yd5ono,