In This Section

Feb 08

V40.00 Release:- VANOS Support

Jan 08

V39.01 Release:- CAN Stream

Nov 07

V38.00 Release:- Various Enhancements

July 07

V36.00 Release:- Measure Injector Dead Time and E85 Support
V35.00 Release:- Switch on Analogue 3 Function with MAP2 Switch

June 07

V33.00 Release:- Delayed Coil Per Plug, Alternative Anti Lag System, VW1.8T Sequential Operation
V32.00 Release:- Various Extensions

March 07

V30.00 Release:- Idle Speed Uplift from Air Con Signal
V29.00 Release:- 3 and 5 Cylinder Support
S40 Shipping
S80 Launch Goes Well

January 07

S80 Starts Shipping in a few days
S60 Version 28.00 Release:- Many New Items

October 06


 
S60 Version 24.00 Release:- Traction Control and Fuel Consumption

September 06


DTASwin Version 23.03 Release:- Cursor Added to Graphical Log Display
S60 Version 23.00 Release:- Idle Speed  Control Using Ignition Advance
S60 Version 22.00 Release:- Turbo Pressure Real Time Adjustment

August 06
S60 Version 21.00 Release:- Variable Frequency O/P for Power Steering

June 06
S60 Version 19.02 Release:- Honda CBR600 and Blackbird Support

May 06
S60 Version 18.04 Release:- Rover K VVC Cam Control Added
S60 Version 17.08 Release:- Lambda History Displayed on PC

March 06
S60 Version 17.00 Release:- Honda S2000 Support

S60 Version 16.00 Release:- Useability Improvements
S60 Version 15.00 Release:- Cranking Oscilloscope

Feb 06
S60 Version 14.00 Release:- More Throttle Transient Maps
Honda K20A
Second Nissan Cam Sensor
Cam Advance Target Sweep

Jan  2006

S60 Histogram
Dealer Training
Nissan Cam Sensor
S60 in Production



V40.00 Release:-  Single and Twin VANOS Support

V40.00 Release of the S series software and firmware adds the following abilities:-

Single VANOS support for the BMW S50B30 engine using an S80. Full wiring instructions for crank and cam sensors as well as the cam actuation solenoids is on the wiring diagram.
Twin VANOS support for the BMW S50B32 engine using an S100. A full map for this engine will be included in the software distribution soon.
Special support for the Suzuki Hyabusa engine using existing 24 - 1 crank wheel. Sensor pin outs have been added to the wiring diagram.

These new engine modes bring the total the S series supports to 19 besides the generic set up. 6 different types of variable cam shafts are now supported including BMW, Honda, Toyota, Rover and Ford ST170. All of these being complex multi-position systems. More will be added as soon as we can get test engines to verify each system in turn.






V39.01 Release:-  Various Enhancements

V39.01 Release of the S series software and firmware adds the following abilities:-

Improved starting of Honda K20A in very cold weather.
Addition of Porsche 996 with 4 tooth cam target in the flywheel mode list.
A generic CAN data stream for dashboards other than our own. Specification in the manuals section of this web-site.


V38 Release:-  Various Enhancements

V38 Release of the S series software and firmware adds the following abilities:-

Allow the VTEC control to use the shift light as output on the S40.
Allow choice of tooth edge on the cam shafts of the Honda K20/K24
Modifications to the alternative ALS strategy when not using a valve
Allow increase of idle valve PWM percentage when the cooling fan turns on
Improvements to crankshaft oscilloscope
Widen limits on throttle stop settings for marginal situations like the Suzuki Hyabusa
Add fan switching in self test for the S40I




V36 Release:-  Measure Injector Dead Time and E85 Support

V36 Release of the S series software and firmware adds the following abilities:-

Injector dead time is the length of fuel pulse that must be given to an injector before any fuel delivery actually takes place. Below this time no fuel is delivered, above it injectors deliver fuel in a linear fashion with increasing pulse times. To measure it with great precision requires expensive injector testing equipment. The dead time varies with the injector design, fuel pressure, battery voltage and the detailed nature of the ECU injector switching circuitry.

We have designed a means of getting a very good approximation to dead time for four stroke engines by automatically switching the engine between two and four stroke injection modes every five seconds. If the exhaust Lambda value stays the same while this is happening the injector dead time is right for that injector at the running voltage and fuel pressure. Accurate knowledge of dead time is important for all manifold pressure and air temperature compensations. Below are screen shots of the real time chart showing the instantaeous Lambda value of a correct and an incorrect dead time value on one of our test engines.


Wrong Dead Time

Incorrect Dead time ( = 0.7ms)

Right Dead Time

Correct dead Time ( = 1.15ms)


E85 is a bio-fuel which contains a mix of petrol (gasolene) and ethanol. Nominally E85 is 15% petrol and 85% ethanol although this will vary with the time of year purchased and the differential rates evaporation from forecourt tanks. Petrol may also be added at any time to the vehicle tank. Because of these issues the ethanol percentage must be measured at all times the engine is running and fuelling and ignition advance adjusted to reflect this. We have implemented support for the GM ethanol sensor and will add more as soon as the technical information becomes available. In general injector and fuel pump capacity must be increased by up to 70% to guarantee the required fuel delivery is available.





V35 Release:-  Switch on Analogue 3 Function with MAP2 Switch

V35 Release of the S series software and firmware adds the following abilities:-

Only switch on Analogue 3 Function when MAP2 switch is on and above a certain throttle position.
Turn off throttle transients when generating the base map.




V33 Release:-  Delayed Coil Per Plug Operation, VW 1.8T Sequential Support, Alternative ALS Strategy

V33 Release of the S series software and firmware adds the following abilities:-

For engines with inductive cam sensors that cannot be seen at cranking speed we have introduced the ability to run the engine in wasted spark, twin spark mode until a suitable RPM is reached, then seamlessly switch to handling the coils individually. A similar feature has long been available for sequential injection.

Support for the four tooth cam sensor on VW and Audi 1.8T engines has been added, allowing the use of sequential injection and individual coil support without changing the cam disc. Note this only works on the variations of this engine with a hall effect cam sensor. Engines with an inductive cam sensor will need this changing to the hall effect item which is an identical physical size.

An alternative anti lag feature is available when a valve cannot be fitted. This implements a low RPM limit when the throttle position is below a user defined value. If the engine would naturally idle at say 5000 rpm this will limit the speed when the throttle is closed artificially, providing higher manifold pressure when than would otherwise be the case.



V32 Release:-  Various Extensions

V32 Release of the S series software and firmware adds the ability:-

To use the ALS output instead of Aux3 for VTEC control
Alter the cam advance control algorith for Honda, Toyota and Ford ST170 cam systems
Add support for the Ford ST170 5 tooth cam signal
Add support for the Ford Mustang 360 V8, 5 tooth cam pattern
Add native support for two cylinder engines


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V30 Release:-  Idle Speed Increase During Air Conditioner Operation

V30 Release of the S series software and firmware adds the ability to use the gear shift input to increase the idle base PWM increasing engine power at idle whilst the air conditioning compressor is working. See wiring diagram for implentation details.


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V29 Release:- Support for 3 and 5 Cylinder Engines

V29 Release of the S series software and firmware adds native support for three cylinder engines on an S60 and three and five cylinder engines on the S80/S100. An option to give out genuine three and five cylinder tachometer signals is also provided.



S40 Starts Shipping

First S40 shipments have left our works and are being received by the customers all over the world. A direct replacement for the venerable E48 but having all the features of the more complex ECU's in the "S" series range, advanced mapping software, flash upgradeability, excellent diagnostics and test features but providing an economic solution for four cylinder engines.

S40 Picture



S80 Launch Goes Well

  Now with plenty of S80's in the field results have been good. Simple and complex V8 engines have been running successfully immediately.



S80 Starts Shipping in a Few Days

After months of testing and development the latest ECU in the "S" series range is due to start shipping. Primarily aimed at the advanced eight cylinder market many new features and flexibility have been added.


S60 V28.00 Release:- Many New Additions

V28.00 of the S60 Firmware adds:-

Ability to run the crankshaft oscilloscope while the engine is running.
Add total attempted starts to diagnostics page.
Add support for Toyota 1ZZ and 2ZZ crank and cam patterns
Ability to switch injectors as a function of manifold pressure.
Add limits to the travel of the traction control agression knob.
Add support for the 48 - 2 cam mounted sensor on the Duccati 749R V twin bike engine.
Add support for Bosch 3 wire idle valve.
Add self test capability for all auxilliary outputs.
Add redundant TPS facility so if one fails the other takes over.


S60 V24.00 Release:-  Traction Control and Fuel Consumption Added

V24.00 of the S60 Firmware adds traction control and fuel consumption calculations.

Traction control is implemented using a wheel speed sensor on an undriven wheel and a gear dependent distance table providing the raw data. A gearbox sensor must be fitted. The aggression of the system, that is how much spark cut is implemented for an amount of wheel spin can be either fixed in the map or controlled by a potentiometer on the dashboard of the car.

Fuel consumption in fuel used per hour and MPG or L/100Km is calculated from the flow rate of the injectors.

Traction Display



DTASwin V23.03 Release:-  Cursor Added to Graphical Log Display

V23.03 of the S60 PC software DTASwin adds a cursor to the graphical log view to easily see the exact value of the item at the cursor.

Log Cursor



S60 V23.00 Release:-  Idle Speed Control Using Ignition Advance

V23.00 of the S60 Firmware allows the use of ignition advance to control idle speed on vehicles where no idle PWM valve is present and cannot be fitted. All features of the PWM valve control are implemented but using advance as an alternative control system.


S60 V22.00 Release:-  Real Time Turbo PWM adjustment Via Dyno Control Box

V22.00 of the S60 Firmware allows the fuel knob of the dyno box to be used for setting the turbo control valve PWM percentage. This is much quicker than typing numbers into the map. When running the engine in closed loop fuelling the fuel knob is redundant and it becomes available for the following functions.

Turbo control valve PWM percentage.
Cam Target Position.
Injector Closing point.
Target A/F Ratio.

A variety of hot keys change the function of the knob during mapping. Pressing the enter button on the box logs the current active value in the relevant map.

Dyno Control Box



S60 V21.00 Release:-  Power Steering and Second VTEC map


V21.00 of the S60 firmware now implements support for a variable frequency output, linked to undriven wheel speed for electric power steering ECU control. This is implemented using the flexible analogue 3 input/output table.

A new option to switch to MAP2 on VTEC activation is also added.


S60 V19.02 Release:-  Honda CBR600 and Blackbird Support

V19.02 of the S60 firmware now implements support for the standard crank and cam sensors on Honda CBR600 and the Honda "Blackbird" engines. These are late model engines, originally on sequential injection, which have a twelve tooth crank wheel and a 3 tooth cam wheel (pictured below). A map for a Formula Student (SAE) engine is included in the software download but as these engines use a 20mm inlet restrictor then it can only be used as a starting point for a non restricted engine. As a matter of interest this restricted engine made 85BHP at 11,000 RPM.

Honda Cam Wheel


S60 V18.04 Release:-  Rover K VVC Cam Control Support Added

V18.04 of the S60 firmware now implements cam control on a Rover K series VVC engine. A complete map for a standard engine is included in the software download. This map raised a standard (if tired 85,000 miles) engine from 109 BHP at the wheels at 5500 RPM to 125 BHP at 6000 RPM. Peak at the wheels torque went from 112 ft/lb at 5000 to 117 ft/lb at 4500. Injector duty cycle is added as a loggable data option.


S60 V17.08 Release:- Complete Lambda History of Current PC Session Available

V17.08 of the DTASwin program now stores the complete Lambda (Air/Fuel Ratio) history of the current PC sesion. Average Lambda value in each cell is stored, The number of records received for each cell and the software can calculate and apply the difference between this and the Lambda target map. Pictures below of Lambda history, count history and percentage differences from one of our dyno sessions.

Lambda Average per Cell

Data Sets Received per Cell

Percentage Difference To Target Map



S60 V17.00 Release:- Support for Honda S2000 Engine, Suzuki GSXR1000 K5 map included

V17.01 of the S series software suite adds support for all of the original sensors of the Honda F20C (S2000) engine. A complete map for this 250 BHP engine is included in the software download. Engine on the dyno below. A complete map for the Suzuki GSXR1000 K5 and K6 is included in the software download.

S2000 on dyno



S60 V16.00 Release:- Useability Improvements

V16.03 of the S series software and V16.00 of the firmware add some small useability improvements. Highly visible flags are on screen when the PC map needs sending to the ECU, current sensor selection buttons are "remembered" between sessions, single button map saving and for long mapping sessions which stretch overnight when the PC is switched off, the ability to save the "Traced Cells" list ("Green Squares").


S60 V15.00 Release:- Cranking Oscilloscope

V15.00 of the S series software and firmware adds a very useful tool for people fitting the S60. It now has a cranking "oscilloscope" built in to assist in determining the crankshaft flywheel pattern and crank and cam sensor positions. Not all modes are supported in automatic determination yet but the visualisation of the pattern is a very useful aid. A Suzuki K5 bike engine, Ford and an Opel/Vauxhall cranking pattern are shown below. Note the Ford and the Suzuki have a cam sensor and the arrival time is marked. The Opel does not have a cam sensor. The result gives two positions for a four cylinder as we cannot determine which cylinder is number one, however, in the case of these two engines the result is correctly determined to within the limits of tooth resolution. To be sure about which is number 1 cylinder all you have to do is remove all the other spark plugs before cranking.

A side effect of this picture is that you can compare cylinder compressions without using a compression tester.

Suzuki Cranking


Visualise Ford Cranking


Opel / Vauxhall Cranking



S60 V14.00 Release:- More Throttle Transients, VTEC improvements

V14.00 release of S series software and firmware adds separate cold and hot throttle transient maps. User selectable switch over temperature between maps is available. VTEC control has been divorced from cam advance control so it can be used on engines with only VTEC such as the S2000.



Real Time Cam Sweep From V13.00

The target cam advance can be swept from our dyno control unit in real time when mapping. Using the fuel running in closed loop Lambda (O2) control, the fuel knob becomes available for other functions. Injector phasing and cam angle sweep are good examples of when this can be extremely useful. Real time chart of requested cam angle and resulting cam advance is shown below.

Cam Swing From Dyno Box



Honda K20A from V13.00

The Honda K20A is now programmed into the S60 from Version 13.00 of the software and firmware (see downloads section). Using all the original cam, crank and engine sensors an easy route to a fully adjustable system for this engine is now available. A carefully constructed base map for a completely standard engine is included in the software download. With this map a standard engine made 195 BHP @ 7500 RPM (and still climbing at this RPM!) at the wheels, assuming only 10% transmission loss that is 215BHP at the flywheel with a maximum of 166 ft/lb torque @ 4500 RPM and a very flat curve.


K20A2 Under Development

K20A2 used in our development, not in a Honda obviously!


Second Nissan Cam Sensor From V12.00

Compatibilty with a second Nissan 360 tooth cam sensor has been added to the S60 from V12.00. This is used on Nissan engine code SR20DET and others in both four and six cylinder versions.




S60PRO Histogram From V11.00

The S60PRO is undergoing rapid developments. Latest Version 11.00 of the firmware and software (available in the downloads section) adds an “Engine Use Histogram”, picture below. This provides a visualisation of engine history. Maximum 18 ½ hours in each “bin” with 1 second resolution. This is stored in FRAM is not part of the normal logging.




Dealer Training and Development Suite

DTA has installed a fully equipped dyno facility for dealer training. Training is available by appointment and we provide a suitable vehicle mounted on a Rototest chassis dyno. Equipment on this engine enables  us to give full understanding of closed loop fuel control, autotune, idle control and the procedures for gaining maximum power as well as at the same time meeting emissions regulations if required.






Nissan Camshaft Mounted Sensor System

The S60PRO is fully able to use the Nissan OEM camshaft mounted engine speed and position sensor in both 4 and 6 cylinder versions. Used on RB25DET, RB26DETT and RB20 in four and six cylinder versions..



S60PRO In Production

A new ECU from DTA. Fast, reliable, up to 8 cylinders with an extensive function list. Read the detail.