We improved upon the factory
system by enlarging the mid-pipes by approximately 0.25" to accommodate
increased turbocharger duty. The single resonator cross-over is replaced
with our optional dual 8-inch hybrid mufflers, or you can option out
these mufflers for the least restriction possible.
The large rear muffler is swapped out for our new muffler which is
internally similar to the one used on our 335i cat back, but it was
specifically designed for the 135i single inlet/dual outlet design.
This new muffler has been lengthened and a small baffle was added to
increase noise suppression.
The resulting sound is nothing short of intoxicating, and we would be
surprised if your stereo gets much use after installation. The low-rpm
range now has a warm and mellow tone without sounding too boomy." As
you move further into the powerband the character changes from a
baritone grunt into a frenetic roar. Our exhaust is a dramatic
improvement over the flat uninspiring tone
produced by the stock setup. It gives the 135i a more aggressive
character without becoming overwhelming. Most importantly, there is no
drone! We believe that it provides the perfect blend of performance,
sound, and appearance, without any of the drawbacks from which most
aftermarket exhausts typically suffer.
The cat back comes in two pieces that are modular. You can chose to only
replace the rear section, which includes the rear muffler and tailpipes.
Or opt to replace only the front section, which includes the larger
diameter mid pipes and optional 8-inch hybrid mufflers. No matter which
options you choose, the cp-eTM 135i exhaust is a 100% bolt-in system that
requires no cutting, grinding, or welding. Welcome to the product of
serious engineering.
All Systems sold Have a resonators installed.
Option of Polished tips or OEM Black tips
Listen
to the
cp-eTM BMW 135i Cat Back System:
Drive Away,
In Car Rev,
Out of Car Rev,
In Car Ride Along,
Low RPM Dig
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