Audi A4, A5, A6 1.8TFSI, 2.0TFSI Downpipe

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.

For these engines there are several different model downpipes available:

Type 1(76mm diameter):

Suited for:

• Audi A4 B8 2.0TFSI FWD - 2008-2015
• Audi A5 B8 2.0TFSI FWD - 2008-2015

With 180, 211 and 225hp.

Replaces part numbers:

• 8K0254250FX
• 8K0254252KX
• 8K0254252MX
• 8K0254253FX
• 8K0254253GX
• 8K0254253JX

Type 2(76mm diameter):

Suited for:

• Audi A4 2.0TFSI FWD + Quattro - 2005-2009
• Audi A6 C6 2.0TFSI FWD - 2006-2011

With 170 and 200hp.

Replaces part numbers:

• 8E0254200HX
• 8E0254200QX

Type 3(76mm diameter):

Suited for:

• Audi A4 1.8TFSI FWD + Quattro - 2008-2015
• Audi A5 1.8TFSI FWD + Quattro - 2008-2015

With 120, 160 and 170hp.

Suited for models with engine code CDHA.

Replaces part numbers:

• 8K0254250QX
• 8K0254252RX

Type 4(76mm diameter):

Suited for:

• Audi A4 2.0TFSI B9 FWD + Quattro - 2015->
• Audi A5 2.0TFSI B9 FWD + Quattro - 2016->

With 190 and 252hp.

A software update (chiptuning) would be advised.

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