Audi 1.9 TDI / 2.0 TDI Lengthwise engine 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(63mm diameter):

Suited for:

• Audi A4 B7 1.9TDI PD FWD + Quattro - 2005-2008
• Audi A4 B7 2.0TDI PD FWD + Quattro - 2005-2008
• Audi A6 C6 1.9TDI PD FWD + Quattro - 2005-2008
• Audi A6 C6 2.0TDI PD FWD + Quattro - 2005-2008

With 115, 136, 140 & 170hp.

Replaces part numbers:

• 8E0254750CX
• 8E0254750FX
• 8E0254750HX

Type 2(63mm diameter):

Suited for:

• Audi A4 B8 2.0TDI FWD + Quattro - 2008-2015
• Audi A5 2.0TDI FWD + Quattro - 2008-2013
• Audi A6 C6 2.0TDI FWD - 2009-2014
• Audi Q5 B8 2.0TDI FWD - 2009-2016

With 120, 136, 143, 150, 163, 170, 177 & 190hp.

Replaces part numbers:

• 4G0254750FX
• 8K0254250GX
• 8K0254750NX
• 8K0254751HX
• 8K0254751JX
• 8K0254752
• 8K0254752X

Type 3(63mm diameter):

Suited for:

• Audi Q5 B8 2.0TDI Quattro - 2009-2016

With 177hp.

Replaces part numbers:

• 8K0131703F
• 8K0131765J
• 8K0254751DX
• 8K0254751SX

Suited for engine codes:

• CGLC
• CGLD

Type 4(63mm diameter):

Suited for:

• Audi A6 C6 2.0TDI FWD - 2009-2011
• Audi A6 C6 2.0TDI Quattro - 2009-2011
• Audi A6 C6 Avant 2.0TDI FWD - 2009-2011
• Audi A6 C6 Avant 2.0TDI Quattro - 2009-2011

With multitronic & 170hp.

Replaces part numbers:

• 4F0254750C
• 4F0254750CX

A software update (chiptuning) would be advised.

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