Quote:
Originally Posted by joshbromberg
I am looking for feedback from anyone who has put a BMS JB4 on their 228i. I'm definitely thinking about it as I want more performance from my car. Can you notice any real difference according to your butt dyno?
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You can definitely notice a difference, had it on my F30 328 .
Car is quicker to respond, builds boost a lot faster and obviously targets higher target boost