Hey guys, I'm new to the forum, came from Bimmerforums where I mostly got purist hatred responses when asking this, but I'd really like to know because I've been wanting to boost me car for some time now. I searched for an answer on this forum but nothing of relevance popped up unfortunately. I have a bone stock 323i with the m52tub25 engine and I'm at ~61k miles. I wanted to know how much boost pressure my motor could handle. I'd love advice from anyone that has boosted this engine and has experience with the model if there are any of you out there. Thank you in advance!