BMW N20 Downpipe

76mm Downpipe without catalyst or particulate filter available in 2 versions for the following models with N20 engines:

Type 1: 

Suited for:

• BMW 1-Serie F20 125i
• BMW 1-Serie F21 125i
• BMW 2-Serie F22 220i, 228i, 228ix
• BMW 2-Serie F23 220i, 228i, 228ix
• BMW 3-Serie F30 320i, 320ix, 328i, 328ix
• BMW 3-Serie F31 320i, 320ix, 328i, 328ix
• BMW 3-Serie F34 320i, 320ix, 328i, 328ix
• BMW 4-Serie F32 420i, 420ix, 428i, 428ix
• BMW 4-Serie F33 420i, 420ix, 428i, 428ix
• BMW 4-Serie F36 420i, 420ix, 428i, 428ix

Suited for versions with 184, 218 and 245hp. 

Replaces OEM nr:

• 18307629250
• 18327645666
• 18328607019

Type 2: 

Suited for:

• BMW 5-Serie F07 GT 528i
• BMW 5-Serie F10 520i, 528i, 528ix
• BMW 5-Serie F11 520i, 528i, 528ix
• BMW X5 F15 40e 40ex

Suited for versions with 184, 218 and 245hp. 

Replaces OEM nr:

• 18322368643
• 18327645665

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.