Diesel Car Chiping/tuning Box?

Mine turned up next day, jiffy bag, no packaging box and no protective bag

Installed it Sunday and yep, definite difference.
On my diesel there is more torque low down, at 30mph I am now in 4th gear instead of the usual 3rd
Best bit us there is no more lag, I used to put my foot down to pull away at a junction and wait 3 seconds for the power to kick in, now it is just there straight away. So much safer to drive

Took 5 minutes to install and 15 minutes to find the best place to locate the box...I am keeping it in its default settings

Cheers for the recommendation guys

 

Just come back from having mine fitted, the car was in for a cambelt so got them to do it while they were at it. Good job coz it is real hard to get to the connector only car (308 pug) and my big sausage fingers would never have done it. They have routed the wiring nicely too and put it inside a wiring box that is on the car so I can get at it if needed and also it is out of the way of water.
Drove home and what a difference, pickup is so much better. Wanna thank DD for changing my perception of these devices. The best 80 quid I have spent recently.

 

Had mine on for 30,000mls now,couldn't afford to run the car without it,when i had it 28mpg now 45,paid for itself 20 times over at least.

 

I've just had a very interesting conversation with a guy about these diesel tuning boxes.
He makes his living tuning high performance Japanese & German cars. His clients think nothing of bills of £10,000+

This is what he had to say about diesel tuning boxes...

..."They are designed to work on stock/factory engines. Primarily, they work by modifying the signal between various sensors on the engine & the control unit that the sensors talk to.
For instance, if a sensor normally tells the cars brain the turbo is running at 0.5bar of boost. When you add a tuning box. It interrupts that signal & tells the cars brain a little fib that it's only running 0.3bar of boost. So the car compensates accordingly by upping the boost by 0.2bar. Therefore you end up with 0.7bar. That's where the extra torque comes from. If you ride that extra torque your mpg gets better.
They are great & perfectly safe. But they don't work on modified engines. If the standard parameters have been altered. The tuning box does little or nothing.
In my experience, diesel vehicles fitted with automatic transmissions give better results than those fitted with a manual transmission"...

That makes much more sense than every description of how they work that I've heard prior to today

 

The DTUK one I had on my mk2 vRS was a single channel one that plugged in between the ECU and the injectors by disconnecting the wire harness on the top of the engine alongside the common rail feed and was sold as an eco variant but in reality it did this by providing extra torque across the rev range. How it did this I'm not sure but it worked. You could get a different one that also plugged into the sensor on the exhaust manifold that offered more performance but made insurance more expensive.

 

That's the type I've always purchased Ade.
You're right, they work a treat
The latest versions can be controlled by an App on your phone. Allowing the different maps (settings) to be changed without lifting the bonnet. Apparently, even whilst driving?

IMHO, that's a bit of a gimmick. But it would be handy to demonstrate it to a non believer. i.e. they are driving & you're in the passenger seat switching it on/off or between the settings live.
In that instance it would be impossible to deny the increased torque/power

 

Hi RT,

As I've dragged this thread back into the daylight.
I thought I'd ask you how you're getting on with your tuning box 14 months on?
Is it still giving great economy/performance results? And was it a good investment of £80?