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A business friend of mine builds turbocharged drag engines. They built a motor with ti valves. The engine went lean and blew on the dyno.(I guess drag engines don't give you much time to make on the run adjustments). I don't know at the time of our conversation, whether the motor had been disassembled, but according to my friend, his assessment was that the ti valves had created more compression, heat due to there sealing ability, minimal bounce and therefore required more fuel than had been programmed. I am sure there are slo mo videos of high reving valve train systems. Be interesting to see what the valve really does when the cam releases it.
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