Chip a Diesel Engine for better MPH

PeoplesChampion

Its an Audi A4 2000 115 BHP. I drive most of the time like a Tog- never take it above 2500 rpm- just want better mph and very low down torque. I think I will try a remap- and give the results here......
I think I do have a problem with warming up, I belive oil needs to be around 100 deg c to work best- but the oil is always around 60-70- is this a problem??

Again thanks for all the advice/ input:beer:

AdrianHi

PeoplesChampion wrote: »

Its an Audi A4 2000 115 BHP. I drive most of the time like a Tog- never take it above 2500 rpm- just want better mph and very low down torque. I think I will try a remap- and give the results here......
I think I do have a problem with warming up, I belive oil needs to be around 100 deg c to work best- but the oil is always around 60-70- is this a problem??

Again thanks for all the advice/ input:beer:

The remap service I'll link to sees power / torque pick up at about 2000rpm and not lower rpm as this can cause drive train rumble (strain) if the torque is too high at lower revs. Probably good for the engine to hit 4500rpm a few times a month
Simon will take car of the car http://www.e-maps.co.uk/products/Audi/A4+%2800-05%29/ looks like 150bhp. If the remap is ever overwritten by the dealer he will restore it if you cover his travel expenses or go to him.

These things are sold for power increase not for mpg improvement, but most people driving the way you do will see better mpg and a smoother power delivery.

Red_Cat

Folks, to put my previous comments in context, my experience is from truck diesel engines. Not the same as cars, but similar in terms of the technology used for ECUs and their mapping.
To deal with manufacturing tolerances, the power output is trimmed in the factory to meet the desired specification, so notional maps are maintained and then a trim is applied.
Also aftermarket is very lucrative. Of course that has to be balanced against getting a poor reputation in the market place, so you would never calibrate an engine to fail, but I stand by what I wrote about the compromises you have to make and the tradeoffs you have when calibrating an engine It take many thousand hours of tests and simulation to get it done.

Locknut

i had my car done at motech I chose the performance map but the do offer a eco option too. And are very knowledgeable in what they do.
http://www.motechperformance.co.uk/

tomstickland

hewhoisnotintheknow wrote: »

you ideally want a remap rather than a chip

chips just trick the fuelling, over time doing damage

A chip change is an "off the shelf" remap.

It is possible to improve power output of most production Diesel engines. Take a look at a place like tdiclub if it's a VAG (VW/Audi/Skoda/Seat) group engine. The advice is to leave the boost well alone.

Most Diesel engines will yield power increases from an increase in fueling alone. This is very different from petrol engine tuning.
Methods to do this include:
-larger injectors (see Diesel Bob webiste)
-pump modifications (fueling screw on early engines, circuit mods on later engines)
-feedback modications (fuel temperature, pump sensors etc)
-ECU map alterations, be it chip swap, intercept chip or remap.

There's loads of info out there, find a website for your specific model.

For example, it's possible to replace the injectors in the 90BHP TDi engine with those from the 115BHP engine and they give an instant boost from 90 to close to 115BHP.
Oddly enough, the diameter ratio of the nozzles when squared is the same as 115/90.

tomstickland

Premier wrote: »

That's a very good question.

The boy racers who dream up the new calibrations think they are so clever.

They're not, but they have the right idea.
They want something that meets their requirements more fully. ie: more power. They have to accept any reduction in component life and reliability as a result.

atrixblue.-MFR-.

i had a 95 m rover sd turbo (basicaly a pug diesel engine) (my dads old car) i had a stage 1 tweak at a diesel service station done for £40 ontop of service price (turbo tuned a bit and fuel ratio upped) but it lacked torque in 3rd and 4th and 5th gears i opted for a torque chip that was great sorted the low torque out in those gears at a heafty price though then i changed the intercooler and air filter uprated to a cone filter, and pipes to custom sillicone and had the tweak uped again went like stink after that and was gutted to see go wasnt much in a way of fuel consumption never noticed an increase or decrease was the same before had it done .

i did see the tyre wore down quicker gearbox side and gearbox mountains went often as well as anti roll bushes and exhaust gaskets went though
have the remap done if you wish to though allot less hasle and cheaper than a chip.

Premier_2

tomstickland wrote: »

They're not, but they have the right idea.
They want something that meets their requirements more fully. ie: more power. They have to accept any reduction in component life and reliability as a result.

They usually have no idea what it affects as they don't usually have the test capabilities or data (or money) to test the entire car and its components ... unlike the OEM.

tomstickland

Yes, but as long as they are prepared to accept component failure that's their choice.

Spongex5

I personally go for the add on tuning type system. I like the fact that it can be removed and a good company will offer part x on old chips. I have had the same chip on 3 cars, originally my BMW 330d, and then on two x5's since, i have one fitted to my wifes 116d and my lad has one on a navara pick up, i am a farmer and also run them on 3 of my 4 john deere tractors. and see a fuel saving on all of them.. i say 3 of the 4, cause the other tractor is a mechanical pump and can't be chipped.

I put one on the current x5 from new and it is removed when it goes for a service, and never had a problem.

I use a local guy who isn't tied to one manufacturer, but we have always gone with a product from italy called TBOX. I will gladly pass on the details of anyone who wants them, via PM.