How to install an E85 conversion kit in a Prius

I can attest to this product. I ran the earlier version of this kit in my '06 Prius for about 12k miles without ANY issue whatsoever (E85 @ $1.00 less)
Being honest however, I did return the unit because it throws off the MPG readout on the computer. This is because the kit is essentially holding the injectors open for milliseconds longer to allow more fuel to enter - essentially lying to the computer making it think it's putting in a regular amount.
Great product for cars without MPG readouts!

The mileage readout error appears to be only with Prius. Non-hybrids are accurate.

Indeed. It seems that it would have the same affect on any system where the MPG reading is obtained by measuring the injected fuel.
However, this is simply a pet-peave for myself. The system works FLAWlessly. I Highly recommend it to anyone. Just giving my experience as a certified customer.
Have an '88 Pontiac Fiero GT that is next in line for the conversion!