Improved performance

[Southerner]

On a recent tv programme Quentin Wilson mentioned a plug-in device that increased BHP and reduced MPG for diesels. Has anyone tried such a thing or got any info?

Geof.

 

[BrianStAlbans]

Why would you want to reduce MPG ,did you mean CO2?

 

[Lord Braykewynde]

10/10 to Brian for observation :O)

 

[cooky1]

I have read a Q. Wilson article in a paper in which he recommends this tuning device:-

http://www.dieselpowertuning.co.uk/
I don't know anything about them but the box will increase BHP and MPG - unless you drive the car hard then it will decrease MPG!

Graeme.

 

[Angus1]

Be very wary, Geof.

You can get cheapo boxes from such as E-bay that are a simple collection of diodes and simply permit over-fuelling, which may give you more power but will also invalidate any warranty, and your insurance into the bargain.

Can the brakes, suspension, clutch and gearbox adequately cope with more power?

I`ma member on the VW Audi forum, I suggest you have a look on there where there is a mine of info on tuning, including re-maps which appear to be a more sensible way of getting more power.

I`m very sceptical about getting "owt for nowt".

I just don`t believe that in such a competitive market as the car market, manufacturers spend billions developing a car that can be substantially improved by sticking a 25 quid box of cheap electrical components on it.

 

[Rubix]

10/10 to Brian for observation :O)

O/10 to LB, Geof said "increase BHP and reduce MPG"

 

[colin-yorkshire]

hi geof

I must agree 100% with angus be very careful of cheap tuning parts or actually any tuning parts on the after market in general, yes some tuninig aids like remapping can work BUT: only if the car manufacturer has allready done the same thing and proved it to work.

I will try and explain this:- for example the basic renault 1.9 diesel dci engine fitted to lots of models from the megane 1.9 dci (90 bhp) to the laguna/espace 1.9dci (155bhp) all the engines are mechanically identical exept for the elctronics and the size of the fueling and exhaust parts.

it would be perfectly accecpable to raise the bhp from 90 to 155

on the basic engine using the correct parts but increasing the bhp of the 155bhp engine to say 190bhp would not be as this is above what the engine was designed for and would reduce the life of the parts that are not designed to run at that power level.

or put another way if the tuning parts mimic what the manufacurers intended to incerase power to the top end level it may well just work, above this limit and it becomes very dodgy.

as angus says" just don`t believe that in such a competitive market as the car market, manufacturers spend billions developing a car that can be substantially improved by sticking a 25 quid box of cheap electrical components on it".

how very yery true that is.

colin.

 

[Dave111]

Geof I had one fitted to my mondeo 130 tdci. i bought it from dragon performance. it made the car more enjoyable to drive with instant throttle response, more torque and bhp (around 170bhp)The mpg went from around 34-36mpg towing to 39 and the best I had was 41. The mpg whilst not towing went from around 54-56 on motorways to 60 - 62 mpg. Around town it went from 48 to 52. So you have to do some serious mileage to recoup the initial outlay especially if you disclose it to the insurance.(the current box is

 

[rosies]

Hello there Geof ,

I have just had the DPT ( Diesel power tuning ) module fitted to my Mazda 6 diesel , after much consideration and reading up of these units . As far as I can work out , the cheap E-BAY units just over fuel the system , as cold start , so don't really improve MPG and block up/damage your injection/compression chambers within the engine .

The DPT module is a self controlling electronic box which changes the electronic injectors to suit its programme . the unit is programmed by computer when fitted to suit your own requirements . I wanted more low down power/torque so had mine programmed accordingly . my particular module is for constant injection fuel systems so can be changed to any such similar engines the only difference being the type of cable used in connecting it up . The Dutch manufacturer of these units have agents who can computer setup the module to factory instructions of your requirements . Or if you like you can self fit after telling the manufacturer your needs , and they will post the module on . Just go on the DPT website and type the necessary information in , also getting your local agent . It has improved my average MPG from 46 to 51 MPG solo and from 30 to 32 MPG towing , the only trouble is its easy to use the extra power/torque and reduce/lower the MPG . My vehicle was never a slouch but by gum does it go now . It can be tuned for low down power/torque , higher mid range power , top end speed , or shear economy . Two + years guarentee , with a cost for mine fitted of

 

[rosies]

Hello there Geof ,

I have just had the DPT ( Diesel power tuning ) module fitted to my Mazda 6 diesel , after much consideration and reading up of these units . As far as I can work out , the cheap E-BAY units just over fuel the system , as cold start , so don't really improve MPG and block up/damage your injection/compression chambers within the engine .

The DPT module is a self controlling electronic box which changes the electronic injectors to suit its programme . the unit is programmed by computer when fitted to suit your own requirements . I wanted more low down power/torque so had mine programmed accordingly . my particular module is for constant injection fuel systems so can be changed to any such similar engines the only difference being the type of cable used in connecting it up . The Dutch manufacturer of these units have agents who can computer setup the module to factory instructions of your requirements . Or if you like you can self fit after telling the manufacturer your needs , and they will post the module on . Just go on the DPT website and type the necessary information in , also getting your local agent . It has improved my average MPG from 46 to 51 MPG solo and from 30 to 32 MPG towing , the only trouble is its easy to use the extra power/torque and reduce/lower the MPG . My vehicle was never a slouch but by gum does it go now . It can be tuned for low down power/torque , higher mid range power , top end speed , or shear economy . Two + years guarentee , with a cost for mine fitted of