Project BMW M3 Part 9: Turbo Update
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At 10 psi, Project M3 made the same power as previously tested at 13 psi on pump gas. This was due to the timing not being pulled back as dramatically as in Part 8 (ec 4/02), letting the motor pull cleanly to redline; 10 psi is the maximum boost I feel comfortable with using 91 octane fuel. View Related Article
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