Tim in Scotland wrote:

But how many miles has the new one done? Don't forget the gearbox has to adapt to the driving style so maybe it hasn't learned F1 take-offs yet................................. The demo was probably well used and had had the gearbox well educated up to change in a spirited fashion!

A good point well made Tim, however, still would like to know what these gizmo's do  Stornaway Grey/Ebony TDV8 HST, September 3rd

Sorry for taking so long to reply, but the shop has been rammed today.
Basically, the main difference is that the plug in units only make alterations to the fuelling and air flow as these units plug in between the ECU and injection system and can only have an effect on the injection system and not the whole engine management. The plug in units do not alter the boost pressure of the turbo apart from a small increase caused by the increase in exhaust gases so they do not over stress the turbo. Because diesel engines run high compression ratios there is a lot of excess air in the cylinder so these units up the fuelling to give more power and better efficiency.
If you are worried that the main stealers will void your warranty these units are definitely the way to go.

I hope that explains everything.

John. www.designerwheels.co.uk
Single piece, 2 piece and 3 piece alloy wheel specialist
17"-26", subltle or bling we have it all

How do they install?

I spoke to John earlier today, very helpful, the unit physically plugs in between the ECU and the injection system. It remains in place and can be removed for warranty work etc.

John described it as a translator of sorts, taking an input from teh ECU and outputting the corresponding data to the injection system Stornaway Grey/Ebony TDV8 HST, September 3rd

How many plugs? Any instructions you can post on here for us John??

These are VERY easy to install. You un plug the wiring harness from the injection system, plug the unit into the injection system and then the wiring harness into the unit so the unit sits between the injection system and the harness. Then there are 2 small power leads for the unit, you need to attach the red to the live terminal on the battery and the black to the negative terminal. Done (as Gordon Ramsey would say). We then zip tie the unit somewhere so it is out of the way, just make sure it is not zip tied to something that will get hot! We also zip tie up the power leads to make them neat. www.designerwheels.co.uk
Single piece, 2 piece and 3 piece alloy wheel specialist
17"-26", subltle or bling we have it all

John,

Is is a Common Rail fuel pressure box?

Would love to know how it works?

Bex, it is a common rail pressure box, similar to the Tunit unit. www.designerwheels.co.uk
Single piece, 2 piece and 3 piece alloy wheel specialist
17"-26", subltle or bling we have it all

If you are looking for more power we have a new product on offer. We are a dealer for Chipped UK and they have a new 3 map product called the ST3. It allows you to switch between the standard and 2 modified maps ECU maps by uploading which ever one you want. I will do a full post with proper details later. www.designerwheels.co.uk
Single piece, 2 piece and 3 piece alloy wheel specialist
17"-26", subltle or bling we have it all