BMW M57N2 Downpipe

76mm Downpipe without catalyst or particulate filter for the following models with M57N2 engines:

• BMW 3-Serie E90 325D, 330D(X), 335D
• BMW 3-Serie E91 325D, 330D(X), 335D
• BMW 3-Serie E92 325D, 330D(X), 335D
• BMW 3-Serie E93 325D, 330D(X), 335D
• BMW 5-Serie E60 525D, 530D(X), 535D
• BMW 5-Serie E61 525D, 530D(X), 535D
• BMW 6-Serie E63 635D
• BMW 6-Serie E64 635D
• BMW X3 E83 3.0D, 3.0SD
• BMW X5 E70 3.0D, 3.0SD, 35DX
• BMW X6 E71 3.0D

Suited for versions with 197, 204, 218, 231, 235, 245 and 286hp. 

Replaces OEM nr:

• 18300445327
• 18303414899
• 18303414900
• 18304717412
• 18304717414
• 18307795998
• 18307796215
• 18307797212
• 18307798330
• 18307806411
• 18307806413
• 18307807474
• 18307807512
• 18307808235
• 18307812875
• 18308508523

There are slight differences between the models so please select the correct horsepower for your car when ordering.

By installing a larger bore downpipe backpressure in the exhaust drops which makes the turbo rev easier which means the turbo starts building pressure at lower RPM's. If during shifting the pressure drops it also builds back pressure faster. 

By only installing a larger diameter downpipe the horsepower usually rises between 15 and 20hp and torque also goes up by 25 to 30Nm. Combining a downpipe with chiptuning brings even more extra power.

A software update (chiptuning) would be advised.

This product is not intended for use on the open road.