High Performance Sound & Flow - Affordable!
When modifying Volkswagens, deleting the factory resonator has
always been considered a "cheap" modification yielding equally "cheap" results.
The Mk5 exhaust is different. The first day we lifted our Mk5 we noticed VW's
muffler choice. Instead of the typical through-flowing resonator followed by a
chambered muffler, the MK5 is equipped with a full-size chambered muffler
followed by a thin chambered muffler in the rear. It was clear the first muffler
did all the work, restricting exhaust flow and trapping all the sound. We had to
try it, so we built some ugly prototypes and started testing. Here's what we
Our test car for this project is equipped with our street
series 3" downpipe, un-resonated. We started with the resonator delete pipe.
Instantly this daily driver sounded like a race car. A noticeable increase in
power was felt throughout the power band. The sound was a bit raw with the 3"
downpipe, but free of drone and certainly not too loud. We chopped open the
factory muffler to confirm the chambered design then added our own performance
resonator to another prototype and began testing. The sound cleaned up and
quieted down. Surprised and pleased with our results, R&D was completed and
This modification is a true winner. We tested the pipes on
both our Mk5s with almost every downpipe/catalytic converter/resonator
combination and found a range of sounds to suit every enthusiast. We've
documented these sounds in a library of video sound clips. From the start, this
modification was designed to be simple without sacrificing quality. Simplicity
Our FSI/TSI resonator delete pipe and performance resonator is
constructed from CNC mandrel bent 2.5" tubing. Bends are tight, clearing heat
shields and suspension without the worry of rubbing or vibration. Press-formed
hangers utilize factory hangers - straight and precise. Everything is precision
TIG welded. A stainless steel 2.55" sleeve clamp is included to connect the pipe
to the factory muffler piping. A reduction is built-in to connect to the factory
downpipe piping. Installation requires a simple cut of the factory piping,
detailed in our installation instructions and pictured below.
Our FSI/TSI resonator pipes are available in two
configurations - resonator delete and performance resonator. Sounds clips and
additional information are available below to help you decide which pipe to
choose. Both pipes can be purchased ceramic coated.