Challenger5 (complete kit)

Challenger5 (complete kit)

798,60 € tax incl.*

* For professionnal discounts, or
for professional tax excl. purchases
inside European Economic Community,
please contact us

The Challenger5 has been designed for those who want to conquer thanks to an ultra modern ECU. It allows managing 1, 2 or 4-cylinder aspirated or turbocharged engines in semi-sequential injection and lost sparks ignition.

Thanks to its high performance microprocessor the Challenger5 allows to get astonishing accelerations.

Two tunings can get along for the same engine (multimapping). The desired tuning can be selected while running, by a dashboard switch, allowing the adaptation to the driving conditions, a super boost of the engine if necessary.

An exhaust bang is done at the end of sequential gear shifting because the normal ignition advance is recovered with a slope allowing to avoid jolts in the transmissions.

A full self-learning function allows the ECU to auto tune its injection time map when equipped with a Lambda sensor (needs a professionnal license, or on option with standard license).

• 2 injection channels (semi sequential injection)
• 2 ignition channels (lost spark ignition)
• 3 fully programmable auxiliary outputs (rpm or temperature relays, ON-OFF camshaft, advanced working ...)
• fuel pump management according to FISA regulation
• RPM sensor selectable Hall effect or inductive on crankshaft flywheel
• 1 internal power supply tension measurement
• 4 resistive inputs NTC-PTC or logical
• 4 analog 0-5 volts inputs
• 1 selectionnable analog-resistive input
• 1 differential 0-5 volts input

For a fast tuning, the maps of engine start, engine temperature rise, accelerating pumps and atmospheric altimetric pressure and intake t° corrections are preset for the ignition advance as for the injection.
The PID of devices commands (turbo, air intake proportional electrovalve) are also preset.

Advanced engine management functions allow a total optimization of the engine working:
• Full self-learning of injection time map with display of learning instantaneous quality
• Continuous survey of richness by Lambda sensor (wideband or 0-1 volt)
• Altimetric and/or dynamic pressure correction

• Rpm limiter on injection or ignition
• Output by output cutoff with rotation of the first output cutoff (engine protection)
• 3 launch limiters, selectable by a rotary switch on the vehicle board allowing to get the best adaptation to the road grip. Gradual limiter shift from launch limiter up to race limiter to avoid wheels slipping at vehicle take-off
• Race limiter

• Traction control by engine acceleration monitoring in function of the gear position

Sequential gearbox management or specific management of robotized gearbox.
• Logical or analog switch with definition of the triggering thresholds
• The order of gears can be automotive type, motorcycle or special
• Intervention time in function of gear position and engine rpm
• Intervention at gear shifting on ignition by cutoff and/or modification
• Anti jolts procedure (transmissions protection) at gear shifting by slope to go back to normal ignition advance (bang on gear shift end)

• Turbo management by intake pressure control
• Management of wastegates with back pressure
• Pressure target tunable according to rpm and throttle (or pedal) position
• Pressure target multimapping
• Bang-bang (antilag system) at the starting up for cannonball launch
• Bang-bang managed with proportionnal air electrovalve or mecanical throttle opening device
• Bang-bang disabling by dashboard switch for road driving

• Every measure has a customizable digital filtering
• For every measure, it is possible to define a strategy of detection of defect, a strategy of replacement value in case of defect, or to use the standard strategies supplied by the ECU
• Wideband or 0-1 volt Lambda sensor

Extremely flexible strategies allow to multiply the possibilities of tuning:
• Two selectable possible engine tuning by vehicle board switch (for example multi fuels, additives, super boost of turbo pressure, ...)
• Addition of engine devices

A completely programmable auxiliary CAN-BUS (11 and 29 bit identifiers, speed until 1 Mbits) allows to send desired data to the others connected nodes, data recording or dashboard.

3 completely programmable auxiliary outputs.
They can be configured in On-Off (programmable hysteresis), PWM from 10 to 10000 Hz or angular (engine synchronous) commands, with adjustable cyclical ratio (and phase), and piloted by any combination of parameters known by the ECU.
It is for example possible to command in ON-OFF, PWM or synchronously with the engine external devices in function of the state of the multimapping switch, race switch, or throttle position, engine rpm, temperatures, limiter type, ...

• ECU in automotive housing


Documentation download

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• The kit is made of the Challenger5 ECU supplemented with accessories to install it on the engine. The kit we provide is specifically designed for 4-cylinder engines with lost spark ignition and semi sequential injection.
If your engine has a different type of ignition, you will need to purchase some complementary accessories.
In any case, report to kit complements below to verify your needs.

• The USB connection-to-PC kit is not included in the ECU kit. It is to be ordered in option or to be purchased separately. It is essential to be able to connect your PC to the Challenger5 ECU and tune the engine.



Challenger5 ECU
Engine loom*
Air temperature sensor
Water temperature sensor
Ignition module two ways (lost spark 4-cylinder)
Connectors kit








Semi finished loom
This loom is pre-wired on the ECU side connector, with sensors and actuators connectors not installed.
Its length is to be adapted when intalling on the vehicle, then the sensors and actuators connectors will be wired.
• The connectors of the standard sensors* and standard actuators* that are delivered with the kit are provided.
• The various branches of the loom are labeled (grounds, power supplies, measurements, auxiliary commands, injectors, ...) but not sheathed. High quality canvas adhesive tapes are provided to finish the sheathing when installing.

Finished loom
As every application is different, there is no standard finished loom:
You have to contact the Skynam technical service to detail the complete making of your loom (see contact page).
• The loom is completely sheathed with braid sleeving.
• The lengths of the various branches are standard (2 meters) or customized (lengths provided to Skynam).
• The connectors of the standard sensors* and standard actuators* are installed.
• The connectors of the other sensors and actuators are to install or are to provide to Skynam.
• The fuses and relays bases are installed if required.

*Standard sensors :
These are the sensors that belong to the engine accessories list.
• water and air temperature sensors,
• atmospheric and intake pressure sensors,
• temperature and pressure sensors of oil and fuel

*Standard actuators:
These are the actuators that belong to the engine accessories list.
• gazoline injectors,
• ignitions coils


The connection kit is to be ordered in option or can be separately purchased.
It is essential to be able to connect your PC to the Challenger5 ECUs and tune the engine. The USB-FTDI interface is the same one than for Challenger6 ECUs.

PC-ECU connection wire USB-FTDI




You can download the installation CDROM parts from the Skynam website.

Detailed installation instructions
Winjall tuning software with User's Manual
ECU software pack with detailed documentation
Injection and ignition base maps to start the engine







The kits we propose are specific to 4-cylinder engines with lost spark ignition ans semi-sequential injection. To use them with a higher number of cylinders or different types of ignition, you will need some complementary accessories.

Here are the main types of ignition you can manage:

Distributed ignition (1 or 2 coils with distributor) :
Uses 1 single ignition module or 1 dual igition module (included in the kit).

4-cylinder engine lost spark ignition (2 dual coils) :
Uses 1 dual ignition module (included in the kit).

4-cylinder engine monostatic ignition (4 single coils) :
Uses 2 dual ignition modules (from which 1 included in the kit).

For complementary details, report to the installation notice included in the software Pack that you can download from our site.


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    ECUs options

    Some features of the ECUs are in option. You will find them here, alone or with accessories.


    Challenger5 injection self-learning function Add to cart  181,50 €  

  • Challenger5 injection map self-learning function
  • Challenger5 ECU is able to fill by its own its injection time map, geatly facilitating the engine tuning. This feature is an option that is to be purchased separately from the ECU.



    Challenger5 self-learning and LSU49-5 kit Add to cart  350,90 €  

  • Challenger5 injection map self-learning function
  • Challenger5 ECU is able to fill by its own its injection time map. This feature is an option that is to be purchased separately from the ECU. This kit adds a LSU49-5 controller and its wide band Lambda sensor to the self-learning option.



    Challenger5 self-learning and DigiLSU kit Add to cart  580,80 €  

  • Challenger5 injection map self-learning function
  • Challenger5 ECU is able to fill by its own its injection time map. This feature is an option that is to be purchased separately from the ECU. This kit adds a DigiLSU controller and its wide band Lambda sensor to the self-learning option.



    ECUs accessories

    ECUs accessories


    Rotator for Challenger5 ECUs Add to cart  72,60 €  

  • Rotator for Challenger5
  • 4-position rorary switch for Challenger5 ECUs