35 mph EV barrier

Not in terms of EPA city nor EPA combined mileage.

 

sorry, can't be done. okay, i guess anything is possible if you put your mind to it.:nerd:

 

i'm not sure if i know what i'm talking about (i just bought the prius 07). but i can drive without the gas motor above 35mph, if i let off the throttle and very gently feather the throttle (or as you guys would call it coast?)

 

Under some circumstances, you can lock out the gas engine by forcing the vehicle to go in EV mode only. But above 34 mph, it will drop out of EV mode, and the gas engine will come on.

Dr. Jake, you would be testing an assumption that (1) it is vehicle speed, rather than MG1 rpm, which results in car dropping from EV mode. My own personal belief is that EV mode drops when MG1 hits 5000 rpm.

 

well, it's not that it can't work. it's just that, if you can make it work, i'll give you one of these: :hail:

 

if you don't have a scangauge, the mfd won't tell you that the engine is spinning but not burning gas. it does reduce your mpg's tho.

 

The only way you can really find out is by trying it. I'm not an expert but this MAY work to get it above 35mph but there are other sensors (namely MG1 rpm sensor) that will not let it go above 52 mph (I'm uncertain if MG1 has a seperate sensor or if SPD1 is the input). The bottom line is Toyota limited MG1's max rpm for a reason (most likely for the safety of the MG). Make sure you take this into account so you don't fry an MG. According to people I've talked to, PIS has designed software to account for this (I don't know how but, I heard they did) and their system allows you to go 70+mph in EV mode. I'm fairly certain PICC's system also allows 70+mph in EV.

I would like to point out (as I always try to do) that there are dangers to mods and all should be approached with caution and the knowledge that you might screw something up. I say all of this not to discourage you but to encourage you to try to take all things into account so you don't cost yourself a lot of money. With that in mind, if you're willing to take the risk, and you discover something, pls share with us.

 

As well, 2 hours in the library can save 2 months in the laboratory. Look up EV mode via fuel cut, and pEEf's PHEV conversion details that puts a CAN controller between the ECM and HV ECU, as well as a separate custom HV battery ECU for his A123 pack.

http://priuschat.com/forums/gen-ii-...-plug-in-hybrid-electric-vehicle-project.html

 

Had a play with my GENII today curiosity got the better of me re the speed limitation in ev mode. I removed the ecu fuse and took it for a drive.
Managed to get past the speed limitation on my vehicle using just electric.
Got to 58kmh without any issues till it started running out of juice.
Had to put the fuse back in after stopping so engine could kick in and start charging the HV battery.
Only issue with this is it gives you the triangle of death. Only way to clear it was disconnecting the 12v battery.
Thought i would post incase anyone wanted to know the result.

 

I think in the right situation, removal of the 34 mph limit would be useful. I live in Ithaca NY where there are a lot of hills. I live in the valley so every time I come home I go down a hill at highway speeds. I could coast down in Neutral but if I do I wont be recharging my batteries. If I drive down the hill in Drive the gas engine will kick on because of the speed im going. If I could limit the car to propelling in electric only I have to assume that it would be able to do that using very little power. Plus I would be able to recharge as I drive down the hill.

I am going to search to find a way to get rid of the cut off without damage.

 

Okay
The Gen 3 has the ability to go "EV" . The limit on the Gen 3 is from 10 to 14 miles in pure "EV" at a given speed above or below "34 mph". On the Gen2 most owners that want over "34" "EV" go with a PHEV to give the vehicle the ability and capacity to do so.

 

I am not sure MG1 and MG2 will go neutral............