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Perfect Power Products

The Perfect Solution to a Powerful Engine Management System


XMS4 - Group C

The XMS4 C Group consists of two different modules, in the top-of-the-range of XMS4 products. They are ideally suited for 4 to 8 cylinder engines with "fly-by-wire" ETC (Electronic Throttle Control), and are available with:

4 to 8 x 2Amp Direct Injector Drivers

4 to 8 x Ignition Signal Outputs

8 x Set-point Outputs

Wide Band LSU-4 Controller

ETC Controller

The XMS4 C Group product range comes with a maximum of 8 x 2Amp injector drives, and up to 8 ignition signal outputs.

The range offers the BEST "Features for Cost" in terms of performance. The XMS4C can be Sequential or Batch, depending on the installed hardware and the availability of a CAM trigger input. The XMS4C offers idle control through the ETC, as well as a settable ETC operating algorithm. Launch control (with ETC or without) is standard.

Like all other modules in the XMS4 range, the XMS4C has a soft or hard fuel cut and 16 different Set-point options, which can be logically combined. This allows the setting of "Shift-Points" and the control of other tasks in the engine bay. The XMS4C range includes ALL the features of the other groups (XMS4 A and XMS4B), but includes an ETC controller with simple "straight-line" traction control.

As per the other XMS4 A and B groups, all XMS4C modules boast the awesome LETRIPP SOFTWARE features, such as; remote master map switching, extensive set-point control and many PC screen display options. All modules have the 2.0 USB interface for quick tuning.

If the "Rolls-Royce" version of the all NEW XMS 4th Generation is what you need - look no further than the XMS4C product range!




40 MIPS processor Lightning fast response
2 complete maps For two different settings
Automatic/Manual Map switching Allows you choose the map you like best
Map Switching while driving Seamless transition gives smooth ride
1 x Rev counter output drive To operate a conventional rev counter
Easy calibration on all inputs

Use any sensor

1 x 0-5V TPS input For throttle and acceleration
Reverse TPS possible

To suit your sensor

TPS input calibration Linear, Un-linear and manual
5V output to drive TPS/AMP Can power up to 0.5 Amp
8 SET-POINT drive outputs Drives up to 1Amp each
Powerful 14 item Set-point Can be sequenced to logical AND/OR
High/Low limits on Set-points Gives great flexibility
Each Set-point can be linked This allows the most complex switching
1 x 0-5V Engine Temperature input Can be calibrated to suit your sensor
1 x 0-5V Air Temperature input Can be calibrated to any sensor
Build in AMP sensor 2.5 bar Calibrated by factory
4/8 Ignition signal drives Positive going output pulse
4/8 Direct injection outputs For 12 Ohm injectors
384 fuel map sites For 3 dimensional fuel control
Fuel with 3x24 sites side maps For AMP/Air/Engine temperature
8 point interpolation between sites Very smooth control
24 AMP map sites Covers the range 0.2 to 2.4 BAR
Interpolation between AMP sites Smooth control
Injector trim available Balance the injectors or the manifold flow
Launch control Enabled via external switch input
USB 2.0 Communication For any laptop in real-time
CRANK (CB1) inputs For balanced or single input
Crank trigger level settings To suit you pickup
CAM (CB2) Inputs For balanced or single input
CAM trigger level settings To suit your pickup
Electronic Boost Control With maps and targets for turbo installation
Powerful Fault indications Aids in installation
RPM calibration Set range and linear/un-linear/manual steps
Tuned Values have immediate effect Live (real time) tuning with USB
Idle control circuit With fall-back and target specifications
Comprehensive Status report In real time, shows what happens
Monitor engine performance In real time, numeric and graphical
Logging feature to a PC Allows you to playback the data
Sequential/Batch mode operation In case you don’t have a CAM trigger
384 sites Ignition map Change ignition angle in fine steps
3x24 ignition side maps For AMP/Air/Engine temperature
3x24 Boost control sites Change the turbo boost as required
3x24 Acceleration sites Smooth acceleration
24 Dwell map sites For these high performance coils
32 Parameter sites For general setting up
Ignition reference angle For synchronizing engine to pc
Ignition advance limit Restricts ignition advance range
Ignition retard limit

Restricts ignition retard range

Start time Sets the ON time for the fuel pump
Acceleration detection Settable sensitively to throttle movement
Launch RPM Target RPM for launch control
Boost gain Set the Boost control gain
Min Injection Injection is cut if below the milli second time
Cylinders To suit your engine upto 8 cylinders
LSU4 zero For calibrating the XMS to external gauge
Neg crank edge Adapt to your crank signal
High CB1 level Adapt to sine or square wave crank signals
Neg cam edge Adapt to your cam signal
High CB2 level Adapt to sine or square wave cam signals
Inverse TPS en Specify Up/Down direction
Fuel Extrap en Extrapolates in the 384 fuel map
AMP Extrap en

Extrapolates in the 24 amp fuel map

Cam every 2 turn For sequential operations
SetP map switch Software map switching
Afr off at acc Lambda disabled under acceleration
Instantly Saves tuning changes Everything is live!
Operates with LETRIPP Software Easy and fast control
Instant help on every item Build in, Text
Help on any faulty item Indicated in red, Fault text description
USB power up Unit will operate from USB power
Sequential ignition For 4 to 8 cylinder engines
Sequential Injection For 4 to 8 cylinders engines
Built-in Wide Band Lambda circuit For the Bosch LSU4
Partial or Complete Closed Loop Lambda Operation
384 Lambda target sites For precise Lambda control
384 AFR Trim sites For ‘ahead of time’ long term fuel trim
Electronic Turbo Boost Control Via bleed valve PWM
ETC (Electronic Throttle Control) Built-in Controller

All models boast the LETRIPP SOFTWARE features.


The XMS4C Group is made up of 2 (Two) different modules, namely;


4 x Injector Drivers

4 x Ignition Outputs

8 x Set-point Outputs

ETC Control


8 x Injector Drivers

8 x Ignition Outputs

8 x Set-point Outputs

ETC Control

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