Hi Crew,
Sorry if this topic has already been done..... but not real sorry!
The question is, do you think that up shifting without the clutch is really bad for the transmission?
I find myself speed shifting, putting pressure on the gear shift then doing a blip of the throttle to cut the torque. This causes the transmission to speed shift into the next gear. It greatly improves the blast-off effect!

Downshift is with the clutch although I practice syncing the engine rpm's during downshift so as not to bounce the suspension. Good method of downshift for the track but practice on the street can only make you better.
Regards
Larry