20v silvertop speed limiter

[LAC99]

What´s the best way to take of the speed limiter of the 20v silvertop 4ag using the standard ECU? Someone told me that he just cut the speed limiter cable and the RPM limiter went down to 7600 rpm...
do you know anything about this?

[domi]

Erm, no speedo signal might throw it in safe mode. I'm fairly certain i haven't heard of a speed limiter until now, that's intriguing.

[Fred_SPb]

If ECU has no SPD signal - rev limit is 7800, with SPD signal rev limit is 8200. Speed limit is 180 km/h, measured with GPS (on spedo - 192 km/h)
Speed limit is made according japanise laws (passenger car can't have engine power more than 280 h.p. and can't go faster than 180 km/h)

[Akis308]

The best way is to use a speed cut controller.
It's not exspensive, here in Greece cost 200 euros max, but you can find it with 130 also.
http://www.greddy.com/products/display/?...ategory=52

[firehawk]

Actually, one can easily build a speed limit defender to most older Toyotas for about half a euro. Since the SLD is actually just a frequency divider, the only part you'd need is a 4024 CMOS 7-bit ripple counter.

The chip needs to be added into the ECU - sort of like a modchip to a game console. The SPD signal is disconnected from the board and fed to the clock input on the chip. The Q1 output from the chip is then fed back to the ECU instead of the original SPD signal. Now just connect ground from the ECU to Vss and reset on the chip, and 12V to Vdd and you're done.

With this SLD, the SPD signal frequency is effectively halved and the limiter will kick in at 360km/h, which is certainly enough.