I am curious about the 2 mappings, other than injen is there actual information on this? proof?Hi guys!
Just took my car into injen and the product developer, Adrian Ornelas, helped me out a lot. He took in my car and gave me a new intake. So far no problems!! The reason why it was faulty in some cars was because the original intake was designed solely for the USA production of the car. There are two productions in America right now: 1) USA, 2) Japan. The Japanese one has different ECU codes resulting in ECLs. I just got my car back today and it works great. Just contact injen and tell them if you are still having problems and they will do whatever they can to help fix it.
Also, don't worry if your car is shifting hard from first to second. I've been doing some research. Apparently it's been happening in all STOCK cars.. The intake had nothing to do with it. And people are claiming that it "smooths out" about around 9.5k miles.
You can read about it here: http://forum.mazda6club.com/engine-drivetrain/265049-automatic-first-second-gear-clunky.html
Hope that helps some of you out and restores your faith in injen!