Now available, the new easy to use J.OE-Boostcontroller !!!

Features:

- contolled by a powerful RISC-processor
- assembled with shock proof SMD-components, housed in a aluminium die cast case
- boost can be set individually for every gear
- original gear sensor is used for reliable gear detection, no changes necessary in your engine or gear box for installing !!
- gear detection preprogrammed for Hayabusa, self learning capability to detect any other gear sensor with resistor-chain up to 6 gears/values
- data and settings are saved in the internal EEPROM memory, no backup battery needed. EEPROM keeps its data over 100 years (You an Your bike won't get that old !).
- electronic „boost valve“ at your steering bar for continuous adjusting boost-limit between min. and max. setting.

- boost ranges:

0,4 bar (5.83 psi) -wastegate: 0,4 – 1,5 bar (5.83 to 22 psi)
0,7 bar (10 psi) - wastegate: 0,7 – 2 bar (10 to 30 psi)
- and now the hammer feature: adjustable torque correction for high RPMs, at whose any turbo engine will decrease in torque: Beginning from a programmed RPM value boost will be increased up to the maximum of boost, that is preset for the 6^th gear. So Your turbo engine will speed up in gears 1 to 5 at RPMs like you're used a 600 ccm engine to be, until limited by RPM limiter of your motor !! There's no boostcontroller being able to do that available before, neither a turbo charged engine !!
- RPM singal is taken from the supply-wire of an injector.

„Why do we develop another boostconroller ?“

This might be Your question. There are enough models of such controllers available yet ... just purchse one of those an install it ... etc. But we couldn`t find one, that meets the requirements of our motorcycles by 100%. Otherwise we wouldn`t have done all that work and developments.
Since winter 2006/07 we were busy in developing hard-/software, searching ald electing suitable components, testing all summer season 2007, testing at drag-races (cup winner several times) – and so on. We`re endless enthused since having installed the J.OE-boostcontrollers in our own turbo hayabusas. Now we can present You our result of one year development work and offer for Your turbocharged vehicle !!

- boost setup for each gear (up to 6):

Using the decode switches inside the controller case (red knobs) You may set boost level in 16 stages for each gear. Usage of a 5.83-psi-spring results in the following boost-levels bar(psi):
0,4 (5.83) – 0,45 (6.6) – 0,5 (7.35) – 0,55 (8.1) – 0,6 (8.8) – 0,65 (9.5) – 0,7 (10.3) – 0,75 (11) – 0,8 (11,7) – 0,9 (13.2) – 1,0 (14.7) – 1,1 (16.2) – 1,2 (17.6) – 1,3 (19.1) – 1,4 (20.6) – 1,5 bar (22)
Settings are adjusted separately for each gear.

- Setting up torque compensation for high RPMs:

Any turbochaged engine has an usable range of torque with two RPM-limits:
1.) RPM when boost starts. That means the engine RPM when the flow of exhaust gases reaches the lower limit to spin the turbo up. You feel the torque begin to increase, „boost is coming“. This RPM is given by the volume displacement of Your engine and the size and A/R of the chargers turbine. We can`t modify the low RPM response with the booscontroller.
2.) Begin of torque decrease at higher or high RPMs. There is only a certain range of air-flow a turbocharger works optimally with. With rising air-mass-flow at high RPMs the cross sections of the turbine an compressor retard air- and gas flow. Looking at a dyno diagram of a turbo engine, You will find a RPM level, from that on a constant decrease of torque is given.
To avoid that, the only thing You can do is choosing a larger size of turbocharger, if You prefer best possible top end power. But You also know the disadvantage of a bigger turbo: Boost doesn`t start befor having 2/3 of max. RPM – and – boost rises very rapidly. Smooth response at lower RPMs gives you a smaller turbo. Unfortunately those result in decreasing torque from 2/3 of max. RPM up.
Well, exactly that is, what the J.OE-Boostcontroller can eliminate: As long as You drive in lower gears, when boost-level is throtteled anyway – for example in gears 1 to 5 – we can use the difference to the max. boost in 6^th gear for compensating torque decrease. That exactly the J.OE-Boostcontroller is doing.
Use the trim potentiometer to set up how many % each 1000 RPM boost rises for correcting torque decrease. That starts from the fixed RPM of 7.600 in standard (best for Hayabusa with Mistubishi TD04H-16T-charger). You can adjust torque comensation infinitely from 0 to 6% per 1000 RPM. For example that means at 5% per 1000 RPM from 7.600 up we will have 15% more of boost pressure at 10.600 as at 7.600 and lower. That works until the target pressure of the 6^th gear is achieved.
The RPM at which torque compensation starts can be customized to Your needs.
So we have constant torque in 1^st to 4^th gear up to 11.000 RPM using 5% at a Turbo-Busa with 16T-charger. Even in the 5^th gear there is only a minor torque decrease over 10.000 RPM. Your engine speeds up like having a 600cc motorcycle. But anyhow you can use a smaller turbo giving You smooth starting boost at 3.500 RPM !!
Thats what we missed at our turbo bikes:
Even a smaller turbo gives You power in top end RPMs. Without the J.OE-Boostcontroller You only can use a larger turbo with all its disadvantages in every day use.
Kojak presented its effect this year at several 1/4-mile-races: Torque from the start on and top end power up to the 5^th gear !!

- „Boost wheel at the handlebar“:

Using the weather proof heavy duty potentiometer at Your handlebar, You can set the overall boost-pressure limit between the lower value given by the wastegate (for ex. 5.83 psi) and the boos set for the 6^th gear. Below the given boost-wheel-limit there is no change.
Example: 17 psi are adjusted for 6^th gear by the decode switch according to. Boost-wheel in middle position, giving about 10 psi. Nothing will change below 10 psi. Boost simply stops rising at 10 psi. There will be no difference for 1^st or 2^nd gear being set to 6 and 9 psi. But you obviously will feel it in 5^th and 6^th gear. You even could turn up the boost wheel from 6psi to max. riding in the 6th gear. The vehicle will more and more speed forward.
Especially a pillon rider will appreciate the boost limit, as he can`t take all fun You want have to as driver :-).

- Recommended engine equipment:

We strongly recommend the usage of a dual-port-wastegate with 35 to 38 mm cross-section. There are two inlets at the actuator of a dual-port-wastegate. One at the bottom for making the wastegate open at its spring-given pressure (thats the only port at single-ported standard models). Another one at the upper side of the actuator diaphragm. Therewith You can give a variable back pressure that makes the boost-pressure rise needed to open the wastegate. So called dual-port-wastegates always keep their regulating effect of the wastegate spring. This is important to keep boost-levels always constant as they`re set.
As a matter of principle the J.OE-Boostcontroller also works using single-port-wastgeates, often used for built in wastegates in turbochargers. Those almost use cross-sections of 20 to 25 mm. But at first regulation quality gets lossy at boost-pressures far above the spring-given pressure. But most important of all is that those small wastegetes can`t keep low boost pressure down at high RPMs. So boost could drift up to 10 psi at high RPM although 6 psi were set. The reason for is that the cross section istn`t enough to make enough exhaust gas pass beside the chargers turbine.

Remember: 38 mm or bigger dual-port-wastegate is needed for an optimal result !.

Any questions ?

Kojak und J.Oe are pleased to answer Your questions !!