Seen this on Ebay :-

VW Audi 1.9TDI 2.0TDI 1.4TDI PD Chiptuning tuning Box on eBay, also Engine Tuning Parts, Performance Tuning Parts, Car Tuning Styling, Cars, Parts Vehicles (end time 24-Feb-09 19:45:00 GMT)

Whats peoples views on something like this for my 2.0 Tdi Jetta?

A mate of mine got something similar for his Mondeo and reckons its ace.

Steer clear.

Its only a pair of resistors that fools your engine ECU into putting more fuel in.

If you want a plug in option rather than a propper remap then go for a digital box that connects into the injector harness.

At that price it will be a very cheap design , quite possibly just a resistor in a box.

It will make *some* difference but it won't be huge and may cause fault codes.

If you don't want a remap then you'd be better off with a more expensive tuning box costing £150-ish which will give better gains and less problems