There were no modifications. The tires were at the end of thier useful life and were inflated to 60 PSI. The SuperMID was installed and has the same functionality the the OEM multifunctional display had. It just gave the capability to display over 100 MPG which gave the drivers enough feedback to continually improve thier technique.

Any 2004-2006 Prius is capable of 110 MPG under the right environmental conditions and driving technique. Near the end we approached 120 MPG. I have seen a theoretical calculation that 135 MPG is possible.

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