Bypass my fuelcut/speed limiter?

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Bypass my fuelcut/speed limiter?

Postby natenz_natenz » Fri Jul 04, 2014 10:23 pm

So im hitting my cut at around what im guessing as 200kmph or 220kmph and have plenty of power left. Is there anyway to bypass this other than chipping or replacing my ECU? The vehicle is a Toyota Trueno GTZ (supercharged) and dont worry im not being a dick about things, am using a friends private airport for runs.
Thanks
JZA80 2JZGTTE Supra RB24DET R34 Skyline Two Mercedes C280's and an Audi A6 Currently in a GTZ Levin
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Re: Bypass my fuelcut/speed limiter?

Postby Lloyd » Fri Jul 04, 2014 10:31 pm

Switch on the speed sensor wire to the ECU. It'll run for a minute-ish with no speed signal before going in to limp mode and needing you to turn the car off and back on again.
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Re: Bypass my fuelcut/speed limiter?

Postby natenz_natenz » Fri Jul 04, 2014 10:38 pm

Wicked. Are there plans on the forums for colour coding my ECU wiring?
So im guessing from what you said that with the signal wire switched that a minute later i will have no limiter until i flick the switch back and restart the car?
JZA80 2JZGTTE Supra RB24DET R34 Skyline Two Mercedes C280's and an Audi A6 Currently in a GTZ Levin
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Re: Bypass my fuelcut/speed limiter?

Postby whynot » Fri Jul 04, 2014 11:10 pm

A permenant way to fix this would be to make a frequency divider circuit and fit that inline. Parts are worth $5 and you wont run into any limp mode issues. If you want an off the shelf solution then a electronic speedo corrector will allow you to adjust the speed cut to whatever you want. Just wire it into the ecu speed signal not the speedo one. Costs about $50 from jaycar.
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