When designing the 2.0T FSI & TSI motors VW thankfully increased the size of the K03 turbocharger.
Unfortunately they designed the downpipe like a brick wall. Rule #1 in turbocharger theory is reduce
backpressure at the turbo discharge. With the factory downpipe installed, exhaust gases exit the turbo
and wastegate only to meet a dense catalytic converter. By increasing the size of the piping to 3" and
moving the catalytic converter further away from the turbo, exhaust gases can mix naturally and develop
momentum before being filtered through the catalytic converter. The result is useable power and torque
throughout the powerband, quicker throttle and boost response.
A CNC machined flange allows gases to merge naturally into a tight radius bend. The second bend
transitions the downpipe neatly through the exhaust tunnel, separated by a stainless steel flex section.
A custom tabbed flange and CNC machined hanger assembly allow the downpipe to be supported by
the factory hangers. Bolting to this flange, a Magnaflow 200 cell metal catalytic converter takes care of
harmful emissions without creating a restriction. Along the way, precisely placed oxygen sensor bungs
allow for factory fitment of the oxygen sensors on both FSI and TSI motors. Exiting the catalytic converter,
a long offset pipe meets an adaptor allowing precise fitment to the factory cat-back exhaust. Double layer
graphite gaskets and grade 5 locking hardware keeps everything tight.
The modular nature of the 42 Draft Designs 3" downpipe allows for changes to be made at any time
without cutting or welding. On race day, the catalytic converter can be easily removed and replaced with
a test pipe. Is your aftermarket cat-back exhaust too loud? 42's offset pipe can be replaced with a
resonated pipe at any time. The stock cat-back adaptor can be replaced with a 2.5" or 3" adaptor, or a
bolt-on cat-back system.
42DD's 3" downpipe is currently available in 4 configurations. Street series systems include a Magnaflow
catalytic converter. Race series systems include a test pipe. Both series are available resonated.
Available Options: Choose before adding to your cart!