Bee-R Two Stage Rev Limiter / Power Builder
The way in which it works differs from the factory rev limiter in that it is an ignition cut, as opposed to a fuel cut. The reason for this is because if an engine (particularly turbocharged) regularly hits a fuel-cut rev limit (such as in high performance driving, or particularly drifting) engine damage can arise due to the lean condition produced when the original ECU shuts off the fuel pump.
The BEE*R rev-limiter allows fuel to pass into the engine still, limiting engine speed by disabling the ignition signal. The Bee*R rev limiter is fully adjustable in 500rpm increments, for safety reasons allowing only a lower rev-limit to be configured than standard. If you have spent a lot of money tuning your engine, or are running at high RPM’s for extended periods of time, it could be recommended to run a lower rev-limit to prolong engine life. Both Formula 1 and JGTC cars use ignition cutting rev limiters, so it is a fully race proven concept.
The Bee*R can also be used as a “two stage rev limiter”, as an aid for launching your car. The Bee*R is configurable for two different rev-limits. A lower rev limit can be activated by a switch, the handbrake switch often being used. This configurable lower limit, can be set to the optimum RPM to launch your particular car from in 500rpm increments. When the handbrake is released, the usual rev limit comes into action, allowing quick launches, and full performance down the strip.
The 3 dial knobs on the head unit will do the following adjustments:
RED KNOB `REV 1`: This will set the Rev Limiter 16 adjustment from 0~F. 0=2500rpm with an increase in 500rpm for each additional turn in the knob.
WHITE KNOB `REV 2`: The signal for this knob is set while the E-BRAKE is engaged.
GAIN KNOB: This knob will increase or decrease the `impact` of the flame/sound from the exhaust. With the setting as zero the item will be turned off and will increase as the knob dial is set.
NOTE: Unburned fuel will produce flames out your exhaust!
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