DIGIBOOSTERtm DIGITAL TURBO BOOST CONTROLLER

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TURBO BOOST CONTROLLER    An essential 'tuner's tool'.

These have been developed as stand alone boost controller from our Synergy 2b range, using the same turbo maps but with greater choice of settings.

  1. 8 SETTINGS (Synergy 2b only has 3)

  2. BYPASS SWITCH

  3. OEM CONNECTORS

  4. LED TO INDICATE CORRECT CONNECTION

  5. FLASH UPGRADABLE

  6. GIVES WORTHWHILE PERFORMANCE BOOST WITH NO OTHER MODS ON MANY DIESELS

  7. EVEN BETTER RESULTS FROM ANY TUNING BOX OR REMAP ALONE (A 140bhp Mazda 5 gained 11bhp)

  8. REDUCES TURBO LAG^

  9. IMPROVES ENGINE EFFICIENCY FOR OPTIMUM PART THROTTLE PERFORMANCE & MPG^

  10. BOOSTS FULL THROTTLE TORQUE AND BHP FROM BELOW 2000RPM TO MAX POWER RPM^

  11. SUITABLE FOR MOST DIESELS WITH ECU CONTROLLED TURBO (wastegate or variable vane)

^ results vary depending upon make & model and whether a dpf is present.

INTRODUCTION

Electronic boost controllers have been around for some time, but most use analogue techniques and this does not give the ability to accurately control the boost pressure. For example, with an analogue controller, whilst you might be able to adjust the maximum boost pressure, you have no control over the part throttle pressure.

In bygone days this was acceptable - drivers & tuning companies were only interested in full throttle, full power, full rev performance gains. The idea of also being able to control the low down & mid range & part throttle performance separately never occurred to them.  (mainly because they couldn't do it!)

But we think 'outside the box' and design our products to do what is possible, not just what is traditional & nor do we blindly copy others. All our products embody this philosophy.

We also firmly believe in providing plenty of adjustability because only you know what result you are looking for.

Finally, mechanical boost controllers cannot be used with vnt turbos - they only work with non ecu controlled turbos, so the DGB1 is the answer.

"The DIGIBOOSTER is another weapon in your tuning arsenal - use it wisely"

You will also need a mechanical boost gauge connected to monitor the actual pressure in the inlet manifold. They are widely available on Ebay and should read upto 2bar or 30psi. For the BMW diesels, and 2L Freelander TD4 with vnt turbo, an EGR bypass is available from Ebay which has a port for a boost gauge.

TECH INFO

The DIGIBOOSTER features a state of the art low power microcontroller that adjusts the map sensor signal 10,000 times per second. It comes with oem connectors and simply plugs into between the map sensor and its existing plug. There are NO battery connections or wiring mods needed.

If connectors for your vehicle's map sensor are not available, we can supply a suitable matching pair of 3 or 4 pin male & female connectors which you can fit in line prior to the existing map sensor plug so that the DGB can be connected and removed easily thereafter. (All the modules on sale are 100% plug-in - we will advise you if you enquire about a vehicle not on the list as to whether a DGB can be fitted and what is involved)

The settings are selected by the dip switches shown in the photo opposite with the on/off switch just below the red switch  block. Access to the switches does not require any tools as the end cover just slides off. The led shows that the cable is connected correctly and the programming pins are to the right of the led.

Depending on the setting & engine, the boost pressure can be altered at low, medium or high rpm by varying amounts, however the maximum pressure is not increased by more than 3-4psi. On most dpf equipped engines, only the maximum boost pressure is increased and by a lesser amount.

Thanks to our proprietary mapping technology, the boost pressure is not just simply increased by a fixed amount regardless of the actual pressure. So, for example, on engine with an over boost feature (eg many Fords) the overboost pressure is not raised further and therefore this avoids over stressing the turbo. NO ANALOGUE BOOST CONTROLLER CAN PROVIDE THIS ABILITY.

The unit measures just 90x65x19mm and is supplied with hard wired (for reliability) heavy duty cable, velcro and cable ties.

MAP SENSOR LOCATIONS.  You need to locate your engine boost pressure sensor and this is usually found fitted to the inlet manifold, the intercooler outlet, or between the outlet of the intercooler & inlet manifold and on a few, on a bracket on the engine or bulkhead and connected by a rubber tube to the inlet manifold.

They have either 3pins or 4 if the intake air temp sensor is also built into it. On some vehicles it may be necessary to remove the bumper or grille so please check before ordering that you are able to fit it.

< Fiat/Alfa/Saab/Vauxhall GM 1.9L cdti 16v engine. It has 4 wires as the in take air temp sensor is built in as well.

 

Mazda 2.2L Denso sensor

 

  <  Renault 2L dci

 

 

 

 

 

 

 

 

 Nissan Navarra/Pathfinder 2.5dc >>i

 

 

 

 

Ford ranger map sensor

< <Mitsubishi Shogun/L200  an example of a bulkhead mounted Denso sensor with the pressure supply pipe exiting from the underside. The sensor has 3 wires, other devices connected by thin tubes and having 2 wires are solenoid valves.

Ford Ranger/Mazda BT50 >>

 

< A typical inlet duct mounted sensor - this is from Citroen DS3 petrol turbo.

 

 

Vauxhall 1.7cdti 4 pin >

 

 

 

FAQS:

WHO IS IT FOR?

This product is for serious tuners who want to get the best from their engine and are not fooled by any forum scaremongers and armchair experts who confidently predict turbo failure without ever having tried such a product themselves!

In the same way that fuelling can be increased without the injection pump or injectors falling apart, (regardless of whether by a remap or plug-in box), so too can the boost pressure be raised by a modest amount. Increases in maximum boost pressure of more than 4psi should be attempted with caution and regard to the inevitable rise in intake air temperature which can cancel out the benefits of a big rise unless the intercooler is also upgraded.

The actual setting you choose is up to you. Don't ask me, I don't know what you want and what state of tune your engine is in.

You will also need a mechanical boost gauge connected to monitor the actual pressure in the inlet manifold.

WHY DO I NEED A BOOST GAUGE?

The Digibooster is aimed at those drivers who want to take tuning to the next stage. This means that you will have probably already had a remap or fitted a conventional tuning box. The extra fuel provided by these will result in more waste energy in the exhaust so the turbo will naturally tend to speed up and increase the boost pressure, depending on how well the ecu controls it. This is the reason a few vehicles overboost and cut out or go into limp mode when tuned. eg  Freelander 2 2.2L when the vnt mechanism becomes 'sticky'. So you really need to check the boost pressure both on part and full throttle.

WHAT SHOULD I EXPECT?

We've had excellent results on our Rav4 2L with the part throttle boost increased by about 5psi and max boost by about 3psi. A Mazda 5 140bhp 2L gained 11bhp when the map booster switch on a Synergy 2b was switched on, taking it to 167bhp  (it had been remapped and the dpf removed). A 109bhp Focus produced 150bhp on a dyno a customer told us, with a Synergy 2b fitted.

On a standard engine the results may be modest, especially at low rpm, when there is just not enough exhaust energy to spin the turbo any faster. When the fuelling has been upped by some means, the the turbo will naturally speed up and boost pressure will rise unless the ecu keeps it tightly controlled. This happens on non ecu controlled turbos where the sub maximum pressure will rise in response to the extra fuel but the wastegate will still limit maximum boost. You can then adjust the linkage or fit a bleed valve to increase the maximum pressure but you cannot alter the pressure electronically if its is below maximum unless the ecu is controlling it. Fortunately most turbos are now ecu controlled so the Digibooster can control the boost pressure.

CAN I USE IT WITH ANY MAKE OF TUNING BOX? YES. Most tuning products with the exception of our Synergy 2 range don't do anything other than alter the fuel. But it makes sense to also increase the air supply to maximise the benefits of the extra fuel. You may find it beneficial to adjust the tuning box once the DGB has been fitted. However you should be wary about increasing part throttle pressure on engine with a dpf fitted as some of these increase the pressure and divert air to the dpf during a regeneration. Even more air my lead to the dpf getting even hotter than normal, though they have a temperature sensor fitted which should stop the regeneration if the dpf overheats.

IS IT EASY TO FIT?  Its just depends upon how easy it is to access the map sensor. Then it simply plugs in.

INTERCOOLER UPGRADE. We do not supply these, however our sister company Energy Tuning Ltd can supply and fit them. Specialists such as Forge Motorsport supply a variety of upgrade kits. To check how ineffective your intercooler is, monitor the intake air temp (IAT) with a scantool plugged into the diagnostic socket and compare with the dash's outside temperature display. (Any code reader/scantool that can display 'live sensor data' will do, and it will also let you check the original boost pressure (with the DGM switched off if one is connected).

The Digibooster DGB1 costs just £79 inc 20% vat + p&p.

Digibooster PRO with 10 settings, in a high quality alloy housing (similar in appearance to a Synergy 1) complete with 3pos dash switch costs just £144 inc 20% vat + p&p. (Also available with chrome push button dash switch instead of 3pos switch for an extra £13. Choose the upgrade option and select led colour on the online shop page)

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