TUNING-DIESELS ESTABLISHED 2005
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SYNERGY 4

SYNERGY 4bv3 (VP) for non common rail engines.

 INTRODUCTION. Available for most non common rail cars, vans and VW motorhomes
The few companies still making non common rail tuning boxes want £350-400 for theirs but they don't work as well as our SUPERB 2-channel SYNERGY 4b which is less than a third the cost.

There is one cable that plugs into the map (or MAF) sensor and then, depending on the make and model, a second cable for the injection pump or two wires to hardwire where we cannot get the pump connectors (L200/Pagero/300tdi & P38, Rover 200/400/600sdi).
NEWS
From December 2017, the Synergy 4b became available to help the hot starting issue that afflicts the P38 etc with a worn injection pump. For no extra cost, this new version avoids the need for other devices and does not involve any extra wiring as it does not connect to the coolant temp sensor.

From Jan 19, our V2 version also has a socket for a dash switch which provides an extra torque boost for towing up hill or a quick overtake and from Feb 2020 the V3 version has an additional adjuster for the sport switch effect has been added.

    HOT START HELPER. The hot start helper gives extra fuel for the first 20seconds of cranking. Settings 6 & 7 enable this feature and the amount of extra fuel is now adjustable to allow for variations in pump wear.

    OFF BOOST ENRICHMENT Three of the 8 settings (3,4,5) now provide adjustable off boost enrichment. This increases the output of worn injection pumps to improve performance when setting off and also means the turbo cuts in lower down the rev range. You can adjust the extra fuelling using the HSF control.
 
   OPTIONAL DASH SWITCH. Lift off the accelerator momentarily before pushing or releasing the button. The extra fuel is now adjustable. For best mpg, leave the button out most of the time.
" IT HAS TRANSFORMED MY DISCO"
synergy 4

The unit uses the same powerful single chip microcontroller used in the Synergy 1R but in a different configuration and using 2 channels. One to process the map or maf signal and one to control the injection pump.


 We don't just use the map or maf signal to activate the box, but also tweak the signal for even better performance where possible.


The photo below shows the controls accessed by removal of the end panel.


You can also plug in the optional eco/sport switch for even more torque - useful when towing up hills and setting off.
Instructions are included but some skill is required to connect the injection pump wires, preferably by soldering on some vehicles. IT REALLY IS WORTH THE EFFORT. We've done a short video showing how the unit connects to the ECU on the Range Rover P38 here.

The Audi, Seat, Skoda,Vw and Volvo versions come with either an 8 or 10-pin injection pump connector, so please check which you need before ordering. The connector can be found in the cable coming from the injection pump and is the size of a pack of 20 cigs with either two rows of 4 or 5 pins. On the Transporter, you need to remove the engine under tray to get to it.

On the other vehicles, two short wires with a 2-pin plug have to be manually connected to the wiring loom either near the injection pump or ECU. This is not difficult if a bit fiddly so take your time. The instructions explain which wires to connect to. Once you have done this, the VP box just plugs in to this plug and to the map sensor and is therefore equally easy to disconnect (no need to disconnect the soldered wires).

PLEASE NOTE THAT THE SYNERGY RED AND BLACK WIRES PIGGYBACK ONTO THE TWO PUMP WIRES.

Matt has done a video of fitting the Synergy 4 to a Ranger 2.5td and the process is very similar on the Mitsubishis, Rover SDI, Freelander xdi, and Defender 300tdi - a bit fiddly but not rocket science. Just double check the connections before starting the engine.

https://www.youtube.com/watch?v=dO0M8IhsmJo                 300tdi testing

CUSTOMER COMMENTS - MORE ON OUR REVIEWS PAGE

ROVER SDI / FREELANDER XDI FEEDBACK NOV 16
"Works perfectly, feels like a different car A+.
Very fast delivery, great communications, works brilliantly A+++.
Absolutely first class! Made a huge difference. Will definitely use again. (ROVER SDI)
LANDROVER 300tdi (DISCO/DEFENDER)  
Fast delivery item as described very pleased thank you AAA+++
Excellent A+
Fantastic, thank you!
Thank you ☺ what a great product!
As described A+ awesome bit of kit.
VOLVO S80 2.5TDI 140
"Your VP box function perfectly! We make between 175 and 180 hp! This is a typical result as other Volvo TDI owners have reported similar power gains and all for under £100.  
Excellent product hope to do business again great. " 

  • Hello Ron..just want to say a big thank you.. Just back from a 3 hour drive with our newly aquired caravan pulled by our trusty 406 estate..280000kms on the clock... The synergy 1 with 3 position toggle switch has transformed the pulling performance of the car. Excellent product and 1st class communication from yourself. Very, very happy. Will recommend you and Synergy to everyone who will listen to me. Many thanks, Steve

    Steve Coley

  • Fitted box, maf and switch to 2005 freelander . I am totally amazed at the performance. Towing our caravan uphill in fifth gear and being able to accelerate when needed is unbelievable. Solo the fuel consumption is regularly in the low forties , brim to brim , or use the power to surprise Range Rover drivers ! I cannot recommend this product enough , utterly brilliant !

    Roger Sell

  • I have to say I was a little sceptical that a little box could make a huge difference The service was great and I received it with in two days I plugged it all in set the box to 10 with the fuel and air on and I was blown away definitely worth the money thanks very much!

    Joshua

  • Amazing transformation, box & maf. tired Freelander td4 turned into a new smooth & fast car. Steady idle, pre-turbo torque & more turbo performance. Haven't tried 9 or 10 yet. So glad I tried this, thanks

    Colin

  • ADJUSTABLE HOT START OPTION
  • SPORT SWITCH
  • OFF BOOST FUEL INCREASE.
  • ROBUST ALLOY HOUSING
  • EASILY ADJUSTABLE
  • 5 YEAR WARRANTY
  • 30DAY MONEY BACK GUARANTEE
  • 1000S SOLD SINCE 2007
Available for the following vehicles
  • Rover 200 /400/600 105BHP sdi (not SD/TD)
  • Mitsubishi L200 2.5, / Shogun 2.5 / 3.2 non common rail. ('01 to'05)^ .
  • Landrover Freelander mk1 L series 98bhp pre 2000
  • Landrover Defender / Discovery 300tdi ^ Drive by wire  only
  • Ford Ranger 2.5td
  • Rangerover P38 2.5 6cyl BMW engine 138/140bhp & BMW 2.5tdi 6 cyl 140bhp
  • Audi , Seat, Skoda, VW 1.9tdi 90 & 110, Transporter 2.5 tdi 5cyl VP pump, not PD
RANGEROVER P38 
OUR CLIENT WROTE
"Hiya Ron got my box 02/02 fitted it 03/02 I've furred a few so called " super chip" boxs in my time and they are shall we say ok, put your module on my 97 p38 all I can say is holy sh*t, didn't realise my brakes were that bad. A million thanks to you and will be telling every one to fit a "Ronbox".

"I recently enquired about one of your tuning boxes and any positive affect to mpg on a 2.5 Range Rover dse 2000 to which you replied you had no feedback in regards to mpg increases.
Anyway I bought one of your boxes and fitted and attached it. The mpg figure I got on a regular run was roughly 60 miles m25 and London driving (sensibly and cruise control at 70 on mway). This is a massive increase of around 7 mpg if not more, around 20%. Even if I run round town constantly, it's a 2.5mpg increase.
So thanks very much, I now have 13-year-old car, 131000 miles and still returns 34 mpg from a 2.5 6cyl engine. Couldn't be happier." Joe.

MITSUBISHI L200/SHOGUN/WARRIOR 2.5
MITSUBISHI
"Great item, excellent comms and service
Excellent item, makes a big difference. well pleased. thanks...
Absolutely brilliant, brought my warrior alive
Excellent product, can't believe the difference it's made, top ebayer A+++++++++ 
A+++++++ arrived quickly, transformed the pick-up, excellent value for money."

VW TRANSPORTER 2.5TDI.
Great xx would definitely recommend

synergy device
The Synergy 4 is a 2-channel digital tuning module with 8 settings for non-common rail engines.
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