BMW B58 Downpipe

89mm Downpipe without catalyst or particulate filter for the following models with B58 engines and EU6 catalyst:

• BMW 1-Serie F20 140iX - 2016->
• BMW 1-Serie F20 M140i - 2016->
• BMW 1-Serie F21 140iX - 2016->
• BMW 1-Serie F21 M140i - 2016->
• BMW 2-Serie F22 240iX - 2016->
• BMW 2-Serie F22 M240i - 2016->
• BMW 2-Serie F23 240iX - 2016->
• BMW 2-Serie F23 M240i - 2016->
• BMW 3-Serie F30 340i - 2016->
• BMW 3-Serie F30 340iX - 2016->
• BMW 3-Serie F31 340i - 2016->
• BMW 3-Serie F31 340iX - 2016->
• BMW 4-Serie F32 440i - 2016->
• BMW 4-Serie F32 440iX - 2016->
• BMW 4-Serie F33 440i - 2016->
• BMW 4-Serie F33 440iX - 2016->
• BMW 4-Serie F36 440i - 2016->
• BMW 4-Serie F36 440iX - 2016->
• BMW 5-Serie G30 540i - 2016->
• BMW 5-Serie G30 540iX - 2016->
• BMW 5-Serie G31 540i - 2016->
• BMW 5-Serie G31 540iX - 2016->
• BMW 6-Serie G32 640i - 2017->
• BMW 7-Serie G11 740i - 2016->
• BMW 7-Serie G11 740Li - 2016->
• BMW 7-Serie G11 740LiX - 2016->
• BMW 7-Serie G12 740i - 2016->
• BMW 7-Serie G12 740Li - 2016->
• BMW 7-Serie G12 740LiX - 2016->

Suited for versions with 322, 326, 335 & 340hp. 

Replaces OEM nr:

• 18327643152
• 18328631625
• 18328652180
• 18328684788

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.