Flap control - Exhaust flaps eliminator (ESE module)

Exhaust systems are not only a big topic for racing enthusiastic bikers. The systems determine the sound, influence the appearance and ensure optimum engine function. Promises of increased performance also arouse desire. In our TecBike Shop you will find a versatile selection of products for your conversion. Discover now for your bike the suitable Servo Eliminator ESE for

• Aprilia,
• BMW,
• Ducati,
• Honda,
• Kawasaki and KTM and
• Suzuki and Yamaha.

But if you want to get your hands on the bike yourself, there are a few things you have to consider when rebuilding. In the following we have summarized important information for you.

Sound, optics and performance - high-quality exhaust systems

If you want toconvert your motorcycle, you are entering the often confusing jungle of paragraphs. Whoever walks into the jungle with naive eyes, is threatened with serious sanctions and a lot of trouble with the police.

Especially changes to the exhaust system are at the top of many bikers' wish list. The exhaust is the last part of your motorcycle, which has to overcome the remains of the burned fuel mixture. Therefore it is under special observation by the police. The "bag" makes a lot of music depending on the model and construction. And as is well known, this is not everyone's cup of tea. In addition there are the emission values. From the legal side the regulations are tightened more and more. This leads to the fact that the exhaust systems of serial bikes are not necessarily an eye-catcher, at least aesthetically. Large technical solutions and complex technology such as flap systems as well as huge front silencers contribute to this.

Euro 5 standard - stricter regulations for motorcycles

Since 1 January 2020, the Euro 5 standard has been applicable to all newly registered motorcycles. This also includes 125cc models. Essentially, the tightening of the standard revolves around two points:

• Reduction of exhaust gas values (Euro 5)
• Standards for OBD II (On-Board Diagnostics, Euro 5b)

Euro 5 also presents designers with major challenges in terms of permissible noise levels. While the new and reduced exhaust emission values will already apply from 2020 for new type approvals, i.e. for new models, the new limits for the maximum noise level of motorcycles will not come into force until 2024. The regulations necessary for this will not be part of the exhaust emission standard; separate legislation is considered likely. However, it is not yet entirely clear whether the measures are about a broader scope of validity and new test procedures or whether they are about a lower driving noise level. Currently, 77 dB(A) apply (as of October 2020).

Exhaust systems with flap control - how do they work?

Exhaust systems with flap control have become a proven tool formaintaining the maximum noise levelsof motorcycles. Now the question arises for many bikers, how a flap control works and which advantages this system brings.

How the flap control in the exhaust works

There are three ways to actuate the flap in the exhaust: by an electric motor, by overpressure or underpressure. So-called pneumatic systems, i.e. flap systems operating by pressure, have a connection to a pressure box. With suction motors, the overpressure or vacuum opens the can. Furthermore, a solenoid valve is integrated into the vacuum line. It allows a manual opening of the flap by pressing a button.

Compressor and turbo engines show considerable differences compared to the suction engine. Negative pressure is only formed in the lower speed range without load. These engine variants require an additional vacuum reservoir in combination with a non-return valve. This procedure allows the flap to be opened and closed at any time when the engine is idling. The non-return valve prevents the negative pressure from escaping if boost pressure builds up.

Systems with electrically controlled flaps are not only much simpler, they are much less susceptible to faults. To control the flaps, no complex pressure system is used, but an electric motor. The electrical systems offer several advantages:

• If a pressure line is worn through, it can create an air leakage problem at the motor. The electrical control means that these problems do not occur in the first place.
• The control always follows the same principle and is load-independent: The damper motor receives power at the touch of a button and thus opens or closes the damper.

HealTech exhaust flaps servo eliminator for the race track

If the exhaust flap of your machine is servo controlled and you want to change the exhaust system, the servo motor cannot be removed. As soon as the motor is unplugged, an error message is triggered.

Here HealTech brings the so-called ESE module into play. This is a microprocessor controlled module. It is installed instead of the servo motor and thus effectively prevents error messages (FI errors). The existing servo motor can be removed, thus saving weight.

The ESEmodules have been designed by the manufacturer to work with all exhaust systems without any problems, depending on the motorcycle model. This also includes the original exhaust system. Thanks to the plug & play connections, installation is quick and easy.

Absolutely note! An exhaust flap servo eliminator is not permitted in the area of the StVZO and is designed exclusively for use in racing. By using the ESE module the operating license expires in road traffic.

Everything for the optimization of your machine from TecBike

TecBike offers you a comprehensive range of spare parts, customizing products and race track products. Do you still have questions about our offers or about individual articles? We are happy to be there for you and advise you in detail!