If you want to increase the level of HP, you will need M54B30 stroker kit which includes crankshaft, connecting rods, pistons, intake manifold, injectros, ECU, throttle body and intake camshaft.
BMW E46 ECU TUNING UPGRADE
That is why the easiest way to upgrade this motor is converting M54B25 to M54B30. There is no sense in handling with M54B25 engine chip tuning. BMW M54B25 engine tuning M54B25 3.0 L Stroker. Camshafts At the same time all drawbacks are also the same as the older M54B30 version has. They are the same as M52TU has in the majority of cases. The most common M54B25 problems include oil leaking. New generation of 2.5-liter engines from N52B25 family turned out to be a better alternative. However, it was not able to take the challenge from new engine versions which appeared from 2005 to 2006. This engine was mainly used on BMW models with 25i index. Motor also has electronic throttle control and Siemens MS43/Siemens MS45/Siemens MS45.1 electronic control unit. Wide ports and channels made it possible to increase power and let engine reveal all its potential. Long intake manifold has been replaced with a shorter one (-10 mm). Engine is equipped with lighter pistons.ĭouble VANOS cylinder block head is also the same. Connecting rods have also been replaced with longer ones (M54B25 connecting rod length is 145 mm). It is made of aluminum with cast iron sleeves and crankshaft. At the same time they also have different camshafts, intake manifolds, throttles, ECU, injectors and other components.Ĭylinder block of the new engine is the same. This is due to the fact that both motors are equipped by different crankshafts, connecting rods and pistons. However the difference between M54B25 and M54B30 is in their displacement. It firstly appeared in BMW production line in 2000 and turned out to be a great alternative to M52TUB25.
BMW E46 ECU TUNING SERIES
This engine is a very popular representative of M54 series which also includes M54B22, M54B30 and S54B32 motors. Normal engine operating temperature, ☌ (F)īMW M54B25 engine reliability, problems and repair
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