Quote:
With Great Power Comes Great Responsibility
|
That’s the famous Spider-man quote I used to tell myself when I went ahead with the tuning box.
Quote:
Power is given only to those who dare to lower themselves and pick it up. Only one thing matters, one thing; to be able to dare!
|
That’s the quote I remember telling myself when I made the decision to get the ECU remapped.
Prologue
The lazy white whale from Tata stables got a shot of adrenaline first off in Oct 2012 after I got the RaceDynamics Dieseltronic tuning box. But as they say humans especially motor heads are always looking to enhance their vehicle and so did I by getting the brain of the car i.e. the ECU remapped.
Got the remap done from Bangalore based tuners, Tune-O-Tronics. I would thank Kryptonite for his detailed review on their remaps on his Skoda and that is what gave me the confidence to go ahead and get this brain surgery done on the car.
I will pen down my views on the remap and a comparison with the box. Please do not hate me as these opinions are mine and may not necessarily appeal to everyone.
So Why remap when I was using the tuning box?
Yes, that’s the obvious and most common question that comes to the mind. My sole reason for going with remap was to have the flexibility of adjusting the power delivery of the car as I wanted so as to improve the drivability in city conditions with the added advantage of highway mile munching. I know it’s too much to ask but this is very much possible with custom maps. This very point is missing with a tuning box where you have to stick to the pre-made maps.
Pros of remap (my views)- Easy to customize according to your driving style and how you want the power delivery
- No hassles of connecting and disconnecting anything when giving for service.
- Your local service technicians cannot detect any anomaly with the ECU as all diagnostics are untouched and will return all clear
- Your car will become a sleeper car if no external body mods are done
- The car gets a new lease of life as it suddenly seems very nibble through the entire rev range.
Cons of remap (my views)- Only con I can think of is someone abusing the car by consistent high revving or trashing it as you would like to feel the increased power. Secondly asking the tuner to tune it way over the threshold without knowing the consequences.
Cool, so how is it actually done?
First of all after seeing how it’s done 1 word of caution, if you are getting a remap done, please get it done from a reliable source, someone who knows what he is doing. I must add this, the guys at Tune-O-Tronics are total pros, especially Siddarth and Vivek. They know each and every ECU board, what to look for and how to work on the ECU.
- First the ECU was taken out of its mount and placed on the bench
- The Rom is read through a master device
- The maps are copied with some 5-8 backups of the stock map and the files are edited.
- Interestingly, the ECU IC chip in the Manza comes from Magneto Marelli and contains some 200 odd files for various conditions.
- The maps per say are pretty crude from Tata and the curves are step like is what Siddarth said when asked.
- Once the maps are edited, the same is written back to the ECU on the bench. Post that the ECU is fixed back to the car.
- Now the use of bench depends on the type of ECU so not necessarily all cars might need the ECU to be taken out. Sorry don’t have any graphs as it seems it’s a tad difficult to generate the gains graph for a Magneto Marreli ECU. Also, I did not click any photographs as I thought its not nice to showcase their business process to the outside world. If you want to see pictures of the bench you can do so at http://tune-o-tronics.com/gallery.asp
So how was the Manza in stock condition?
If I were to describe how the Manza was in stock condition, I would do that in two words,
Lazy Cruiser. Yes, the 1.3 MJD is refined to the “T” and the 90 bhp VGT has ample power to pull the car in stock but there was no fun, there was quite a bit of turbo lag especially in roll-ons.
Ok dude then how is the Manza after the remap?
Good question. But before I pen that down I would like to point out how it was with the Dieseltronic.
Manza performance with Tuning Box- The Dieseltronic tuning box has two maps, namely P1 (mild power increase and mileage) and P2 (almost 30% power increase)
- The drivability of the Manza definitely improves with the tuning box, in fact I was getting almost 1kpl more in city conditions in the P1 mode.
- I have not done any speed timings with the box but definitely you reach faster to the ton.
Alright, so now that I have told you what happened to the car with the tuning box, you will say, your remap gives the same kind of things. Yes, that’s true that the remap will give the same kind of improvement as the box but the best part is that the remap will touch quite a few settings in the car thus increasing the efficiency rather than the box which was concentrated purely on increasing the fuel pressure and fooling the stock ECU.
Comparison Remap vs Tuning Box- A number of engine processes are optimized in order to make sure my car benefits as much as possible from the remap. This gives more efficiency rather than the box which was concentrated only in fooling the ECU by increasing the rail pressure.
- Less amount of smoke when accelerating. Yes, you read that correctly. Even I was surprised initially. Earlier with the box as well as interestingly in stock when the turbo used to fully open there was a plume of black smoke, none of this with the remap, or at least what I can see from the RVMs.
- The power is more linear with the remap as the torque is delivered more linearly than the tuning box. There even though the turbo lag was reduced you can still feel the sudden push. This does not mean that the fun of getting pushed back into the seat is gone with the remap, in fact the force is still there but through a wider rpm range.
- Tuning box is just plug-n-play, whereas remap is a more permanent feature. However, no hassles of extra wires and placement of the box etc.
- The current map on the Manza is essentially if I have to put it by taking into account the tuning box, I would say it’s currently in P2 mode with mileage
My gains as was told by Tune-o-Tronics
114-115 bhp with 246 NM torque
I do not have any graphs or dyno runs but I am planning to do some runs with the TorquePro OBD 2 app and put down some results.