MBC question

[T Rex]

If I were to add a MBC without raising the boost pressure will my ecu lean out my fuel

[trenton]

Personally, I don't like MBCs because if you overboost, or if something goes wrong, it can easily blow your turbo or worse. I think it will run lean as well.

[Cosmo]

No, it won't. It will lean out on its own because of the extra air, but the ECU map won't change.