Additional Info and MOT

At VGKracing we layout the best information to assist our customers and others interested in obtaining reliable and accurate data to improve the performance of their engines and have a wider knowledge of the possibilities that technology can offer. This will increase performance and engine longevity and help to reduce fuel consumption and environmental pollution.

Emerald LTD Company’s advise for the accurate adjustments for MOT

Throttle bodies are balanced using an accurate synchrometer – ensure that the readings on idle are identical and that this is also true when the throttle is just cracked open – it is very important that all throttle’s open together. It’s quite common to have a fault where one pair of throttle bodies open slightly ahead of the other pair.

With a fully warm engine you should not be running more than 5 degs ignition advance at idle. The engine idle speed should be as a result of the throttle opening and not be artificially held up by using ignition advance.

Check the fuel map resolution. Ideally it needs to be 200+ otherwise the fuelling steps near to idle will be quite coarse and make fine adjustment very difficult. The software has a rescale for maximum number function to do that easily.

Ensure that there are zero leaks in the exhaust. This is very important. Also ensure that the test probe is fully in the exhaust pipe and is not miss-reading due to contamination with outside air.

Ensure that the CAT you have fitted is working correctly – we’ve seen many over the years that have failed or partially failed.

With a Lambda figure of 1 you should really be seeing CO2 of about 0.2% - 0.3%.

Ideally do all of the above setup and then check the emissions output using a good and known to be accurate gas analyzer – Ideally positioned in the centre.

Ordinarily with the Rover K Series engines on Jenvey throttle bodies we would not see a need to fit an IACV valve and with the correct setup it should be possible to get most, if not all cams, developed for ROAD and TRACK applications to pass.

Emerald LTD.

Accurate data for Baro sensor adjustments

At VGKracing we use as a Barometric sensor a MAP sensor of the Bosch brand, because after many tests, it’s the best performing one.

The reference of this MAP sensor is 0 261 230 004, recently replaced by the reference number 0 261 230 037.

To use the MAP sensor as a Barometric sensor, just do not connect any tube on the end to the inlet manifold and put the correct settings within the ECU.

For proper installation we suggest following these steps.

Pin Nº 1 of the Baro to pin Nº 9 of the ECU. (+ 5v supply)

Pin Nº 2 of the Baro to pin Nº 30 of the ECU. (ground - polarity)

Pin Nº 3 of the Baro to pin Nº 34 of the ECU. (Signal)

Accurate data for MAP sensor adjustments

Of course this MAP sensor can also be used as such, simply plug in the tube end to the intake manifold and put the correct settings within the ECU.

This data is correct to use with the MAP sensor Rover K Series OEM.

Of course you can use both at once, place two sensors when using an Emerald K3 and just assign a different signal wire for each and putting the two data tables in the ECU.

If the Emerald is a K6, this already has inside a Baro sensor, so you should go to "Configuration Ecu", "Baro Sensor Calibration" and select in the box "Input Source" the option "(9) K6 internal " and in the box "Signal Smoothing" the Nº 1.

Accurate data for Wideband adjustments

At VGKracing we are currently working with the Innovate brand and LC1 type.

For proper installation we suggest following these steps.

Red wire (+ 12v) with a fuse of at least 5 Amp and take the voltage via ignition switch, preferably from multi funtion relay unit.

Brown wire (signal) with a resistance of 100 watts/0.5 Ohm to pin Nº 35 of the ECU.

White and blue wire to a good earth.

We must also put the data into of the wideband, here is the data needed to fit perfectly into the Emerald ECU.

Now we must put the correct data into the ECU for its perfect operation. A wideband is a perfect item to make an approach if we don’t have an apropiate map and want to make the best one possible before going to the dyno to make the ECU map definitive.

If we do not have a perfect map, we can initially apply this "Feedback Mode" and this "Closed Loop Settings".

Once you set the map after spending multiple corrections, you can change the "Closed Loop Settings" for this one, which limits the wideband and makes it more accurate.

Once the map is definitely finished, probably the "Feedback Mode" is changed to one that best suits the engine performance.

Of course, the more control elements of the fuel mixture and air, the easier it will reduce consumption and be controlled the gas emissions.

The use of the MAP sensor in engines with bigger cams will probably prevent the correct operation of the engine under heavy and full load conditions and medium/high rpm. The same way any map that was adjust the existing legisIation on environmental pollution, will prevent the possibility of obtaining the maximum power and torque.

Accurate data for IACV adjustments

The idle valve is rarely used on engines with inlet manifold of 4 butterflies (TB,s), but if used in VVC and K16 engines, here some examples of settings for the ECU.

Accurate data for Oxygen sensor OEM adjustments

If you use the original lambda sensor with the engine, here is an example configuration for the ECU.

Accurate data for Cam sensor adjustments

For synchronizing of the cam sensor, we use this information depending on whether of the engine is VVC or K16, provided and when using the VVC system and/or the sequential injection.

Removing the Distributor

A good option is to remove the distributor, rotor arm pipe of the inlet cam at the Rover K Series engines EU2, put a coil instead and control the ignition from the ECU. For proper installation, follow these steps.

Original wire Black/White Pin Nº 1 of the coil to pin Nº 25 of the ECU. (- Negative)

Original wire Brown/Red Pin Nº 2 of the coil to pin Nº 2 of the ECU. (+ Positive)

New wire Pin Nº 3 of the coil to pin Nº 5 of the ECU. (- Negative)

Then, just change the option "Single Coil" by "Wasted Spark" in the section "Configuration Ecu", "Ignition Output Options".

Wiring Diagram

Here are several setings to make electrical connections in an Emerald ECU, do the OEM and make a Plug and Play installation.

PDF file EU2 VVC engine to Emerald K3

PDF file EU3 VVC engine to Emerald K6

PDF file EU3 K16 engine to Emerald K6

Note: Remember to always select the boxes that correspond to the connections of the auxiliary parts that have been placed in the engine from the screen to "Ecu Configuration", "Input Channel configuration" to activate.

If we follow the examples we have used, in this case should be so in an Emerald K3.

Synchro USB to Adapter and Com Port

PDF file USB to Serial Adapter

Miscelaneous files

PDF file Gear Lever

PDF file PG1 and PG2

PDF file EU2 K Series Engine

PDF file EU3 K Series Engine

PDF file S1 Service Manual

PDF file S2 Service Manual

PDF file Ecu Fault Codes

PDF file Data Logger Guide

PDF file Emerald K3 Manual

SET file Initial Settings Map ECU

SET file Emerald K3 Software

Recommendations for choosing Spark Plugs and Engine Oil

The spark plugs and engine oil are other factors that influence consumption, longevity and engine performance. At VGKracing we only use Denso spark plugs brand and the choice of thermal grade will be based on the compression ratio and engine use.

On the subject of oil, what is truly important in addition to the kinematic viscosity is the viscosity index. We suggest that is approximately 160 +/- 5%.

Here's a short guide to assist you when choosing.

Note:

It is possible to reduce oil viscosity, so long as you have successfully controlled the maximum temperature.

Clutch and Flywheel

We at VGKracing normally use a 184 mm diameter clutch in race engines.

We use the Eliseparts flywheel with a Group A Helix clutch next to a concentric clutch slave cylinder with the proper travel release to operate the clutch in rover PG1 gearbox.

Notes:

The use a 19 mm master cylinder is recommended.

It is possible to remove material, leaving the flywheel with a weight of just 2 Kg and then rebalance.

You can use an organic or cerametallic drive plate.

You can also use this clutch on street with organic drive plate.

We at VGKracing hope that this information was helpful and if you didn’t find here an answers to your questions or doubts, please do not hesitate to contact us.