I bought a Biondo electric throttle stop with the hopes of trying some 10.90 racing years ago. I got tech’ed in at a divisional IHRA race at keystone and paid to test n tune. I ripped the center out of my flywheel on my first test hit. Never ran it again as IHRA dropped all classes and went to 100% bracket.
The index races down hear don't allow electric or pneumatic throttle stops and no down track stutter. You basically have to tune the car to run the number. They don't want people with a 4.50 capable car slowing it down to 6.0 and running 165mph.