Heres what marketing said I can say (plus my little bit);
Our Diesel Tuning Modules are specifically designed and tested to achieve enhanced performance by modifying the electronic diesel fuel injection parameter mappings.Its is through careful interplay of these parameter values and characteristics that optimum performance of your engine be achieved. One of the reasons this optimisation is required is manufacturing variances and varing fuel qualities across the country, across the world. Vehicle manufacturers wish to produce one version of a vehicle for worldwide distribution. This means they must choose the lowest common denominators, and for go some performance gains.
The turbo boost pressure is not altered by our modules and dynamically increases parameters to the enhanced values of the electronic diesel fuel injection system. within the manufacturers specification. A number of engine parameters are modified, depending on the specifc engine and its operating condition. Usually these will include a number of aspects, including fuel injection timimg and volume. Increases in boost can cause ECU error codes if not managed carefully. Our modules permit the orignal ECU to handle all of its error and sanity checks. Unlike some other systems on the market, our modules has been extensively tested in real world conditions from the heat of the deserts to the cold climates of the alpine regions, in day to day city driving to the demanding slogging off road outback usage. They are truly tested Australian tough!
Our Common Rail (and other digitaly managed fuel systems the) Diesel Tuning Modules also have adjustable tuning via a moveable connection. The Diesel Tuning Module can also be tuned using a MS Windows computer (typically a laptop).. This is a form of tune that can do considerably more than the manual adjustment. Once the module is installed a dealer can actually sit in the driver's seat and re-programmed as he drives along (although we advise to have an assiatant do this for safety reasons). As well as overall power being able to be increased, the power can be moved further down or up the range and the power delivered can be varied to be smooth or aggressive.
Another great advantage of this is that if you decide to enhance your vehicle further, through maybe larger intercoolers, larger exhausts etc. you can easily adjust the Diesel Tuning Module to match the new modification so the full potential can be reached. With fixed map boxes and chips this is not possible and a new chip or box would be required.
Ppower and torque can be felt immediately after the moduleis fitted. The throttle response is improved and particularly low and mid range torque is vastly improved, making the overall performance of the vehicle completely different. This is particulalry valuable when precise throttle reesponse is required in off road conditions. Not only that, but the improved power and torque mean that you can approach obstacles in a controlled manner, not relying on brute momentum to carry you through or over them.
When carrying loads and/or towing the extra power is a also great advantage. The overall drive becomes more pleasurable and the engine in most instances actually runs smoother.
Many onwers are repoting benefits of 5-10% better fuel economy. This obviously varies from vehicle to vehicle, and more particulalry the driving style. After serveral months most drivers stop 'testing' the additional performance, and return to their prior driving style to achieve the improved economy.
-- end marketing supplied content
Personally my fuel consumption is unchanged since fitting the module 95K kilometeres ago, I just drive a little harder now
Across the diesel injection industry many manufacturers are going to higher injection pressures for better atomisation, and resulting improved burn and emissions reductions. As side benifet there is more power (until EGR and the likes are added).
Persoanlly I have seen issues with VG turbos when people try to bump the boost too much. Some VGT have poor resolution (too few possible settings). This causes the boost to shoot to about 10PSI over the factory setting, then drop back to normal. Dyno graphs confirm the same variance in power. Sometimes ECU codes are set. This overboost is not a good thing, and may be discovered at a scheduled service
EGT's have well been covered by many, including Gale Banks & Pittsborough Diesel (sp) in USA - the last is very reputable and knowledgable on big diesel engines form any years, so there is no need for me to through that again.
Like a petrol (gass) performance engine, the appropriate monitoring gauges & equipment should be installed and USED by the operator. Trucks with DT motors back have had EGT gauges standard fitment since the early '70's - MACK R600/F600 is an example. In fact I know of a number of cooked (standard) truck engines because the operator did not read the gauges and adjust drving style tosuit the conditions.
Unfortunately many standard gauges in late model vehicles are only just more than the old idiot lamps. There are very inaccurate, and only serve as a general indication. Using these or the associated sensors to base critical decisions on is silly. eg - direct from one manufaturers shop manual as servicable (not jeep - cause I dont have one immediately avail);
100C 0.15 - 0.28
80C 0.2 - 0.45
60C 0.4 - 0.8
As you can see you couldnot rely on that temperature sensor to make any definitive ECT (or IAT - itst the same sensor in a differnt location) assessment. Similar applies for the bosot sensor! We where going to produce our ownd digital data logger, but with that sort of variance you can only consider the changes in the values, not the actual values themselves. Alas, they are definitive (accurate), but only relative. Each sensor could fall between the serviceable extremes and be considered servicable. You cant rely on factory analog sesnors either for critical tuning decisions, so eleimiate anybody who believes that their use is any more advanced or advantageous.
Anyway, enough words from me for today.
Everybody, have a great day!
_________________
DaveO
ENG-TEK Diesel Performance Centre
Australia
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