406oc.co.uk

had a big a4 6page leaflet through the post today from a company called tune it.they sell a plug and play box for diesels and claim big power/torque gains but its not cheap[a few hundred quid]
has anybody tried one of these? or is it all smoke and mirrors?

There's lots of these on the market, varying in price from £80 - £400. They are connected between common rail fuel pressure sensor and ecu and 'lie' to the ecu so it increases fuel pressure and hence injects more diesel. Generally reckoned to be less effective than a decent remap and have the effect of making the trip computer tell porkies - cos it 'thinks' it has injected less fuel than it really has. This may be the basis of the increased economy claims.

I suspect a remap's a better bet.

I have seen similar things fitted to the rover 75 and BMW diesel engines they can return good economy or power there have been a recent article in a magazine where they fitted this to a VW golf PD GTTDI where they put the car on the rolling road and it returned a power increase from 132 BHP @ 4330 and 211 lbsft torque at 2195 RPM too 142 BHP @ 4280 RPM and 238 lbsft torque at 2600 RPM hope this clears the smoke and mirrors

nigel

I had my Xantia (110) fitted with a module type upgrade rather than a re-map which made the much more fun but wasn't night and day.
Worth it for the extra fun but don't think that it will briing anything else.
The extra horses (less than 20) encourage the heavier right foot so any fuel savings tend not to be obvious!
For the price of the module and the extra fuel and insurance it's easier and less risky in the long run just to get a slightly more powerful car.
Engines are always undertuned to give reliability so when you remove that leeway buy tinkering with it you are leaving yourself open to lots of potentially expensive if not terminal failures.

Hope this helps!

Forgot to add.

Claims of 40% more power are bollocks!

Thisis also a plug in box, but this one actually seems to remap the ECU, rather than sit between it and the engine. Interesting box.

Ive got one, bought it on eBay for about £85. Plugs straight into the common rail so you can easily take it out of your insurance company ever fancied having a nosey under your bonnet.

its absolutely awful, does nothing whatsoever. on a rolling road it made no difference at all to the power. perhaps a slight mpg increase, but to be honest the HDi engine in my 406 mk2 is very economical anyways

will take a pic if you like

the tune it one looks very convincing with lots of happy customers and they say they have rolling road results that show it works,but when they say you can swop from one car to the next it started ringing bells as a 2.0 turbo is going to be diffrent to 2.5
captain jack the one you show looks a lot better

My module was a Torqmaster effort and did make a difference but looking back on it not enough of a difference to warrant the initial expense.
These plug in modules don't perform any kind of re-map they simply alter the signals to either the ECU or the nfuel pump to make the car think it's under a greater load than it is and pump more fuel and the unburnt fuel can make the car very smokey when you hammer it.

sockpuppet wrote:Ive got one, bought it on eBay for about £85. Plugs straight into the common rail so you can easily take it out of your insurance company ever fancied having a nosey under your bonnet.

You may be surprsed to learn that if you pick the right insurance company, modifications may not actually cost more to insure so there is no point in not disclosing them

skyinsurance wrote:

sockpuppet wrote:Ive got one, bought it on eBay for about £85. Plugs straight into the common rail so you can easily take it out of your insurance company ever fancied having a nosey under your bonnet.

You may be surprsed to learn that if you pick the right insurance company, modifications may not actually cost more to insure so there is no point in not disclosing them

You would appear to be encouraging people not to declare modifications with this advice, not hugely responsible as an insurer?

No, looks more like he's suggesting you always declare your modifications, but advising that not all insurers will charge you extra for it.

I declared my spoiler and alloys to Direct Line, and they did charge me more - but still £80 less than Elephant gave me for my renewal, even though I hadn't declared my alloys to Elephant.

stevenlizuk wrote:

You would appear to be encouraging people not to declare modifications with this advice, not hugely responsible as an insurer?

How so?

I work for a company that specialises in insurance for modified cars. My company insure many modified cars cheaper than a mainstream insurer would insure the standard car.

And no, I certainly would NOT advise non-declaration of modifications..

Apologies

I misread your advice.
Sorry Skydude

Steve