New S1 Veto Prius II technique

I've been fooling around with S1 and found some stuff out that. I've discussed with some other prius owners and we have a few theories. They are all basically around the idea that the S1 timer is not reset between fast reboots. I am not saying that this saves gas in any way. S1 was designed to heat the CAT to reduce emissions, so it's function is important. The only time this could possibly be useful is when you do lots of short trips and know the CAT is already warm.

It's also been theorized that if you hit the EV button in the first 5 seconds then reboot 10 seconds after, you might be able to expire the S1 timer without ever lighting the ICE.

On a warm engine the below procedure works with anywhere between 3-6 cycles. Cold engines have gone through as many as 11 cycles without success.

1. Get in your Prius II.
2. Depress brake and power on Prius
3. Don't put it in gear, just wait 7 seconds for the engine to turn on.
4. Wait 3 seconds, if the engine does not power off, turn off your prius, wait 3 seconds and return to step 2.
5. If your Prius did shut off, your in S2 (I think).

Now I don't know if this will work if the block temp is below 40°C, but I've seen this behavior with block temps between 50-60°C.

The first couple of times I tried it, the engine immediately (1-2 sec) shut off after it lit. It never happened on power up #1 or #2. If seen it using the above procedure on power up #3 and in some cases not until power up #4. Even with 3 seconds of ICE each power cycle and 4 power cycles to get there, it may still burn less gas than a normal S1 burn-in. For now, I'm not saying this will save gas, but getting around S1 is always cool.

I was able to do it twice. Can anyone confirm?

Poll of "confirmed" "not confirmed should follow this post on this thread in 2 minutes.

Oh Specs:
2007 Prius II.
Factory EV mod installed.
Canadian EBH installed.
SG II (no xgauge) installed.
CanView not installed.

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