Italian box

[Northerner]

I have had a few of these boxes on previous vehicles.
They do increase BHP by adding more fuel, but if you use the power you use more fuel!

Chipping can definitely increase mpg and you can choose the modification with that in mind. It doesn't just increase bhp but torque as well, so you can drive in higher gears with the obvious benefit.

Here's another test from my favourite motoring magazine which also explains what I've already said about engine parameters and how chipping can improve an engine's performance.

http://www.autoexpress.co.uk/car-news/31827/mpg-boosters

There is no doubt that, for many diesel engines, chipping or remapping can have significant benefits but of course, as has already been mentioned, we need to think about whether we'll recoup the cost and we should also ask our insurers if it will increase the premium. It it does increase the premium there's not much point but in my partner's case there was no increase.

 

[oldish hippy]

take a picture of that box martin knows which one it was sat on top of something someone might know what it is and i wouuld only guess that the switch under the gear stick turns it on or off not sure just a guess as the switch is in close proximty of the gear stick and it might be what is being talked about i only guessing as not mechanicly minded at all well not with all the modern engines with eltricky this and that that give me a old fashioned engine with no eltricky gubbins then i happy to play and try and fix it well point and plugs and diesel filter and glow plugs

 

[moonshadow]

Good idea, will do in the morning. Might fall over something if I go out now, it's pitch black!