If it's old enough to have a speed sensor setup which sends an analog signal straight to the ECM, then you disrupt the frequency of that signal. If it's current enough to be set up to where that analog signal gets converted to digital before going to the engine ECM, you need the software for it.
Have you tried turning it off and on again
By changing those parameters in the engine ECM.
It is not recommended by the manufacturer to remove the speed limiter on a Fiat Doblo. The speed limiter is installed for the safety of the vehicle operator.
As stated previously, many of the countries where Renault trucks are marketed have laws regulating the speed at which these vehicles must be governed at. If you're not in such a country, and you have the authority to have this done, you go to the dealership, have them hook up the software, and get the parameters for it changed.
155 mph before the Speed Limiter kicks in. If you disconnect the Speed Limiter, the top speed is approximately 167 mph.
The governed speed is programmed into the motor's ECM, and requires reprogramming by a technician with the appropriate NexIQ box. If you're in a country where the speed settings are mandated under law, you'll find this a bit difficult to accomplish.
120mph with the Governer limiter. without Governer limiter, 155mph.
You do not get rid of the speed limiter. It is in the engine control computer and you would have to have it reprogrammed.
With speed limiter ive had it up to 68 and that's stock how it came so my guess is with out a speed limiter around 80-90
The engine computer does act as a speed limiter.
It has no governor. Speed or revs are computer controlled. The best way to alter the speed or rev limiter (changing rev limiter is really risky in my opinion) is to order a power program from Hypertech ( Power Programmer III) or Diablo Sport (Predator). This will allow you to make numerous setting changes that are completely computer controlled.
the speed limiter is 150 i am still not sure of the top speed