BMW M47N2 Downpipe

63mm Downpipe without catalyst or particulate filter for the following models with M47N2 engines:

• BMW 1-Serie E87 118D
• BMW 1-Serie E87 120D
• BMW 3-Serie E90 / E91 318D
• BMW 3-Serie E90 / E91 320D
• BMW 5-Serie E60 520D
• BMW 5-Serie E61 520D
• BMW X3 E83 2.0D

Suited for versions with 122, 150 and 163hp. 

Replaces OEM nr:

• 18303414596
• 18303428561
• 18307794914
• 18307796189
• 18307796194
• 18307797294
• 18307797295
• 18307797296
• 18307798307
• 18307798309

Please note, dueto differences in models it is important to select the right model in the drop-down menu.

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.