Originally Posted by Hepy117
Wouldnt the stage 2 be for the TBE not the CBE. I would think the stock tune would be fine with the CBE and tmic. Obviously wouldnt be using the tmic to potential. But safe i would think
The 5th gen is quite different than the 4th Gen/WRX due to turbo placement. The DP contributes quicker spool up ~ 2700-3200 rpm but not much more.
Your mods with a CBE are much closer to Stage II than Stage I. The Stage I OTS map may not be the best. You would be better off staying stock with Stage I OTS map than installing the mods and running either Stage I or Stage II OTS maps.
Subaru engine management is pretty darn good to protect the engine but the whole point of getting a custom tune is to have a safe tune across the full operational range. A tune for your engine. The Cobb OTS is a generic tune. The risk may be small but do want to take any risk?
Best recommendation will be to not install mods until you can e-tune (~150$) or pro-tune (~$500).