Top Speed of Gen 4

I have yet to max out but has anyone else observed that the car accelerates stronger between 80-90mph compared to 70-80mph?

Posted via the PriusChat mobile app.

 

Sorry, not been aware of my speed when above 80mph. What more were you in?

 

Virginia? 20 over gets the death penalty in Virginia, plus they kill your cat to show they are serious.

Montana, though is the place to speed. At 117 mph you'll get passed by a red 1984 top down caddy convertible with steer horns on the front and pair of fake testicles on the rear. And the cigar smoking driver will be laughing.

 

I'm afraid to go too fast... I might blow out one of my cheap Toyo tires. I stay down on the 30 mph range, like bisco.

 

He said West Virginia. That is a different state.

 

My Gen 2's Michelin Energy Saver Tyres have an 87H rating - that means they're rated to handle speeds of up to 130mph. I once got my Prius 2 up to 100mph - I found it surprisingly well balanced at that speed, albeit a tad noisy.


iPhone ?

 

Max speed on the gen3 is 116mph


iPhone ?

 

Can we flash the ECU to undo the speed governor

 

It is an RPM governor. You can put on larger diameter tires to go faster. That is what the Gen 2 land speed Prius did.

Notice that to go faster this way, you accelerate slower. Bonneville allows push trucks.

 

Oh geez ! Now you guys tell me !
I was going to get a Ferrari, but figured I could get close to 200 mph in my Prius Gen 4.... Now I'm bummed

 

You can accelerate your Prius to 200 MPH, but you will need a cliff 1400 feet tall to push it off. El Capitan is 3000 feet tall and nearby, so it is possible.

 

We have done 117 on a downhill while cross country traveling. But yes the “set” limit is 115 on flat roads.

Gen4

 

How do I unset the governor to get a higher speed

 

You can use larger tires to get higher speeds, expect slower acceleration.

Even the land speed record guys could not alter the rev limits.

(in theory, you could hand craft a new final drive gear to do the same thing. tires are cheaper and require less skill. The Prius v uses a different final drive than the Prius liftback to get lower top speed and quicker acceleration.)

 

Yes, and the computer controlling MG2 and MG1 (and the HSD) would need re-programming somehow.

 

I can confirm I was limited to 112.

 

124 mph in Germany! Speed is limited because of the CVT transmission , Toyota limited all to 200 kmh ! I am thinking to remove from computer the limit ! Driving perfectly on high speed ! The car feel perfectly at 125-140 km/h and consumption is around 5,3 l /100 km

 

Is that:
(1) displayed on the speedometer; or
(2) read from ECU internals via the OBDII port; or
(3) measured with a different device, such as a GPS?

We know that #1 intentionally reads higher than true speed, and have had numerous indications that European market speedometers are biased higher than North American speedometers. That is why readings by #3 (best) or #2 (better than #1) are useful.