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Originally Posted by JAM3S
Why do ppl keep acting like the M4 will get an extra 100RWHP with just a tune? Its already almost maxed out with not much more room for improvement.
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The turbos run at a maximum of 1.25 bar boost but often less, the electronic brain only cranking up to that level of pressure under high operating temperatures or at high altitude. It means the power and torque figures will remain consistent in the vast majority of conditions. As Vice President of engineering, Albert Biermann, explains, that means a standard M3/M4 will often be as fast on track as a tuned car with a claimed additional 50bhp but no extra leeway to continue to develop that power as operating temperatures soar.
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That means the S55 power is not almost maxed out.