My Linea must be the first one to be chipped with RD (Feb 2010, as birthday gift from my wife)
BTW, you cannot test accelerations in GPS. I have sports Garmin Forerunner 305, which is supposed to work better than a cellphone GPS or a navigation device. Yet, it is not good enough to measure acceleration as it will still have inaccuracies (in coordinate/distance and thus time/speed).
By Feb 2010, I had driven just about 20,000 Km within warranty (I bought in Jan 2009). I requested an aggressive mapping. Karthik and his team gave me a strong mid-range P1 setting and a P2 with strong top end setting. In a typical urgency, a typical gear up-shift in Linea MJD never lets the rpm fall below 2700 and P2 works well for this. I bought the HKS free flow air filter too from them.
Ever since purchase, I had thoroughly enjoyed it. I did face a problem though. One of the fuel rail injector gave me a scare. In one of my acceleration above 165 in P2 on highway gave a sudden death for a fraction of a second and MID showed - check engine though it was running fine after that.
I got out of the car. I could smell diesel. When I opened the bonnet, I could see a lot of diesel being spilled on the engine casing, right behind the fuel rail. I could figure out the cause of the leak. I removed the box (easy as I didn't have the air filter box). Went on the stock. Everything seemed to be fine though I could still feel slight diesel smell whenever I got out, but no diesel to be seen stagnant.
Later I came back to RD. People there gave me some confidence that nothing that could be caused by the tuning box and they would help me (through their contacts in Tata Service and/or using their knowledge about such issues) to get any damaged part under warranty. I went to the service center in Hosur road. There they don't service Linea/Punto. But, they took the car for a wash so that they could find out the leak. The service engineer came back after the wash and told me that one of the fuel injector rail was slightly loose. They had tightened it. Ever since then, no problem.
I also had another instance of clutch failure and it turned out to be some small pin that needed to be replaced. I'm not sure if it was caused by the extra torque from the tuning box. So far good.
People at RD told me from the beginning itself that they would replace my box with a light weight box with remote instead of the wired switch. They kept their promise. I was one of the earliest to be given that the new box. But they told me that they would want to put a mild setting to start with and asked me to observe. I wanted to run a dyno test too.
But this time I, not the car, got problem. I joined a racing team called Cleated Warriors (biking). Almost all my weekends were filled with trainings for racing on bikes. I had completed a 200Km, 300Km, 400Km, 600Km Brevet rides in this season. So, I hardly touched the car.
RD had called me up only yesterday and asked my feedback. I told them that it lacks the punch that was with the older box. They asked me to come in whenever I had time. I went in today. They had given me an equally aggressive P2 setting now. It looks good, but I had hardly driven 3 Km. So, I will have to hold on for more tests. But I have more races to win. I missed my KTM half marathon podium by a minute. I have Nandi Hills race on bike in October (as part of
Bangalore Bicycle Championships) and Bangalore Ultra in November. So, I doubt if I would ever have time to touch the car.
Anyways, I love the team in RD. Very enthusiastic team, very nice and pleasant to talk to. Down to earth. The thought of a local support was what made me go to RD instead of petes. I'm thoroughly satisfied.