Install, with cleaning the TB takes ~ 1 hr. w/o should be ~ 30min.
The TB's cleanliness has nothing to due w/ Techron fuel additives as only air and oil mist (from the AOS) flow thru the TB.
There definitely is a noticeable torque difference. Not so much in the peak power band, but lower starting around 2800 RPMs in my butt dyno experience. I've had mine installed for over 2 months now FWIW.
The splitter is secured w/ both epoxy and a machine screw from the outside (belt and suspenders kinda thing)
Thanks again Pedro