A Stratified Journey

[Tifosi42]

So after a couple of days and trips to work and back I can say that the Stratified flash tune is way better than the the Cobb OTS. The overall driveability is so much better, the light switch effect is gone and the car feels like it has more power when it is not under boost. I noticed my fuel trims are more even, with the Stratified flash tune I am staying +/- 4% LTFT whereas my Cobb OTS was constantly in the negatives which indicates to me that this is definitely a more dialed tune specific to my car. I am really enjoying the smooth and hard power delivery with this flash tune as well. I have attached a data log I was able to do one evening, it looks ok to me but @Lex; could verify if he feels like it. The ambient temperature was about 33 degrees F. Thanks Stratified, now I can't wait to buy more car parts, my wife will love you for it, ha! Now the question of downpipe or intercooler next?

[Lex]

Originally Posted by Tifosi42 So after a couple of days and trips to work and back I can say that the Stratified flash tune is way better than the the Cobb OTS. The overall driveability is so much better, the light switch effect is gone and the car feels like it has more power when it is not under boost. I noticed my fuel trims are more even, with the Stratified flash tune I am staying +/- 4% LTFT whereas my Cobb OTS was constantly in the negatives which indicates to me that this is definitely a more dialed tune specific to my car. I am really enjoying the smooth and hard power delivery with this flash tune as well. I have attached a data log I was able to do one evening, it looks ok to me but @Lex; could verify if he feels like it. The ambient temperature was about 33 degrees F. Thanks Stratified, now I can't wait to buy more car parts, my wife will love you for it, ha! Now the question of downpipe or intercooler next?

Everything is well within spec! Car is running well and I am glad you are enjoying the tune.
The next step I would take is an intercooler. After this, I recommend a race pipe to eliminate the second catalytic converter. A full custom tune would refine the Flash tune further once all the bolt ons are installed.

After this, if available, an E85 tune would bump power even further on the OEM turbo.

If you have any specific questions please feel free to drop me a line. On the topic of modifications, there is a short article I put together:

Blog : The modification path in a MazdaSpeed/MPS vehicle : Stratified Automotive Controls