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Message: [QUOTE="Power Hungry, post: 521675, member: 1375"] The one thing I can't actually measure (at the moment) is RPM of the turbine. However, I'm ordering an optical pickup so that I can add turbine speed to the datalogging results. Given that the exhaust side of things hasn't changed (from both a configuration and a pressure standpoint) I'm going to have to proceed with the basic premise that the turbo isn't working any harder and therefore shouldn't suffer any significant failure. Historically, when we've talked about stock turbos failing at high boost levels, this was because the only way to achieve higher boost on a stock turbo was to push more fuel, which created more backpressure, which drove the turbine faster and created more boost. It's the overdriving of the turbine which ultimately ends up with a turbo failure. Since we're making more boost due to a redesign of the compressor wheel, not by overdriving the turbine, the turbo isn't really working any harder. The compressor is just more efficient, as indicated by the 1.2:1 backpressure/boost ratio. From a logical standpoint, I have no concerns for turbo reliability. [/QUOTE]

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