So my evo x is was over boosting, I narrowed it down to the ebcs or the tune (although I’m pretty sure it’s still factory tune as I bought the car with only a Cobb intake so other than that it was stock).
currently have a single vacuum line from the turbo outlet to the wastegate so I’m only pushing 14psi as of right now.

now, I plan on getting my car tuned with a grimspeed ebcs but I won’t be able to get a tune until I have time (July 2023), so I’m curious if I can just temporarily run a mbc to target factory boost (21-23psi if I remember correctly)

can I run a mbc for a few months with no tune? Or should I leave it the way it is right now where the turbo outlet is straight to the wastegate?

Thanks in advance! Merry Christmas and have a happy new year!