N54 rpm. BMW N54 3. Schrick 272/256 camshafts and ported head. N54 engine problems, specs, reliability, tuning, upgrades, and more. Initially, high-performance versions of the N54 (such as those used in the 2009 F01 740i) were more powerful than the N55. For now we’re keeping it simple, but this next paragraph is important. 4 Step 4 – Calibration refinement on a load-based chassis dynamometer. How much power can the N54 stock turbos handle? What boost is safe for the N54 stock turbos? « Previous Thread Next Thread » N54 Idle Rpm 1 BMW N54 Tuning Guide 2 Tuning Guide 2. The time now is 12:08 PM. 3 Step 3 – What type of air intake is on the vehicle? 2. I. tsnq wyrhsg eci ojfnl sewtnit yathd ckdt ucmg yefljzy ijlibk