Rev limiter controler... ??? What you think

[ZANDER]

I have seen these on books, the main one i see is "Bee-R Power builder/ Rev limiter" any one have one or is there more makes out there???
What exactly is the "power builder" bit mean?
Are they hard to fit??
And will one solve my non existant limiter problem?? and hopefuly spit the odd flame out???

[Rico2006]

I know the Bee-R cuts revs to generate a flameburst from the exhaust... which is cool.

[ZANDER]

Yes Yes Yes that sounds good

[Martin F]

Originally Posted by ZANDER

What exactly is the "power builder" bit mean?

They build power by allowing your turbos to begin spooling up. If you are sitting at a drag strip and managing to hold your revs at say 4,000rpm rather than idling at 750rpm then your turbos will be spooled further and take less time to produce power when you do get moving.

Of course you can do it without one of these devices, but they just help make the job a bit easier.

[ZANDER]

Would they be hard to wire into ecu???
Does any one on forum use one???

[Cass]

Bit of an old tread this,but i have just had one fitted to the Soop the day.

I have noticed a huge power gain and had no fuel cut either and had a comlaint from a neibour already whilst fine tuning it .

My mate Colin fitted it for me and from what i seen it looks like a job for someone who knows what they are doing ie snipping and conecting ECU wires etc...etc.But i cant complain for £175 all in.

Cheers Cass.

[Cass]

This is Bee*R’s popular two-stage ignition cutting rev-limiter. It is used to prevent damage arising from over-revving your engine. Part of the reason for its popularity is the large flames and loud bangs it produces from the exhaust when active!

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 Bee*R rev-limiter has another final neat feature. The gain control knob allows you to adjust the frequency of the ignition cut. This in turn changes the frequency and sound of the flames and bangs from your exhaust!

Cheers Cass.

[suprarob]

Hi Cass

Bit confused mate how do you get a power gain from this unit ?

[Cass]

Not realy a gain,but more of improving what you already have.

The car feels alot more responsive the first tubby seems to have more pull and the transiton to the second seems more powerfull.I have no lag anymore either.

And the noise is pretty cool when at lights (If you like that sort of thing).

[suprarob]

I see

what you really bought it for was the flames and the banging and popping

You will have to give me a demo when we meet