1. Introducing the smashing new Team FIAT T-Shirt !! To order yours click here : Team FIAT T-Shirt

Some facts about performance tuning

Discussion in 'Engine and Drivetrain' started by drifter, Dec 21, 2010.

  1. gurjinder

    gurjinder Staff Member Janitor

    Messages:
    3,989
    Punjab
    @drifter

    Put up some dyno sheets. Some work in progress on these engines. I like to see some concrete facts rather than mere talk.
  2. FastLove

    FastLove Superiore

    Messages:
    606
    Mumbai
    Linea 1.4
  3. arjun

    arjun

    Messages:
    17
    hyd
    @drifter
    will the service center guys able to pick up the remap with their tools?from whatever info i have gathered across the web it says its easily picked up and my warranty would be void.

    the remap u do is any different or will it be picked up?
  4. drifter

    drifter Regolare

    Messages:
    310
    London/Mumbai
    The examiner will not be able to pick it up the way we do it.

  5. Thats nice to hear, do you giver that as gaurantee/warranty with the re-map ? What if..by chance the folks at service center do manage to pick it up and reprogram it to the stock mapping ...would you re-(remap) for free ? :mischievous
  6. Italia-Linea

    Italia-Linea Staff Member Janitor

    Messages:
    2,123
    Pune
    Hi Peter/ Drifter -

    just out of anxiety i am querrying you- when you remap what the the values shown on the ecu scanner change?

    for example on ecu scanner before the remap the fuel pressure is 280 bars, what will this figure change to?

    similarly there are various corrections at injector level on all the 4 cylinders, whats the effect on them?

    boost pressure desired is 1108 bar, what will this value change to?

    with the given fuel/air mixture generally the EGR duty is 40-45%. with more fuel pumped in what will be the new range?

    similarly there are lots of values that will change after remap. can you list them?
  7. drifter

    drifter Regolare

    Messages:
    310
    London/Mumbai
    We guarantee that they will not pick it up. This is because we can copy onto the new programm the old download time as well as other parameters.

    Usually the program will only be overwritten when a software update is coming. We then have to completely re-write the program as we need to consider the update. However we would do this for a nominal fee.
  8. drifter

    drifter Regolare

    Messages:
    310
    London/Mumbai
    The injection values change within reason. Also you will see boost differences on different cars with the same stock map. The main point is that we are not mapping to extremes and at te same time as long as the windows are not left, there is no reason for the techs to question any values. We are doing this over here for many years and have in the many thousands of cars till date not a single problem.
  9. Italia-Linea

    Italia-Linea Staff Member Janitor

    Messages:
    2,123
    Pune
    why i am worrying coz i have seen these values closely. the difference between the desired values and actual values on indian MJDs are just 1-2 points here and there.

    so when i say fuel press desired is 284 bars as per ECU mapping the actual shows around 280-282 bars.

    So if you remap and say that the car will gain approx 10% more power it becomes obvious that these values will jump off the desired values for most of the fuel and turbo related values.

    Can you please put in some values that are changed after remap as compared to the actual desired values.

    a screenshot or graph of before and after will help us a lot.

    i would love to go for the remap way to get more power at right rpms from my Linea MJD, as i dont think tuning boxes are way to go.
  10. drifter

    drifter Regolare

    Messages:
    310
    London/Mumbai
    You might not believe it, but in certain areas we have to take some fuel out to gain.

    Also you have to appreciate that nobody in any dealership does drive the car while using the examiner. When going throught the settings all is done at very low load, which is the lowest load plane on the ECU. We do not need to alter the values there. The only factor that changes is the rpm on the same load plane. Even if they would do out in the examiner it would be extremely difficult to meaure values they would be able to reference it to.

    I am not trying to patronise you, but because you do not do this business professionally you might not understand the complexity. Over the years we have done over 15,000 cars. When Fiat had a batch of faulty Garrett turbos (volkswagen too) we had mapped over 100 hundred of them. The specialist of Fiat who had to examine the cars were not able to detect the maps. They would have loved to blame it on the maps as this would have given them the opportunity to void the warranty and save the claims. In real terms a tech can only 'detect' a re-map when they go out and drive it. It just does go much better then an stock mapped car.

    And you can trust me on it that I am not rying to tell any story. It is in my interest to make it safe for the customer. I do not have the time to fight with dealers over claims and neither the time to lose my reputation. If I would ignore any of these issues I do not need to start building up a nationwide performance tuning frenchise. I would be dead before I start.

Share This Page