Supersprint has developed a new, stainless steel full exhaust system, from
turbo-back, which includes a set of special 65mm down pipes, a
set of metallic cats with 100cpsi, a mid section wit a built-in X-pipe, and a
set of rear mufflers with bolt-on tip kits, available in
quad or dual design. When ordering you can choose one individual exhaust
component at a time and build your own exhaust, or order the full exhaust for
the greatest savings and biggest performance gains!
The increase in performance is astounding, as the peak power jumps from 324 Hp
to 348 Hp! But most importantly, the torque curve is way above the stock, from
1.500 rpm all the way to redline. In some places the difference is + 26 Hp (5000
rpm). The power build-up remains as smooth as stock, only much stronger
throughout the range. The stock engine puts out 324 Hp instead of 306 Hp. These
are impressive numbers to start with.
- Better Sound
- Decreased Weight
- Increased +26 Horsepower / Torque
- Unlimited Mile 2/3* Year Warranty
The Supersprint rear mufflers are of the performance
proven "flow through resonated design", rather than the baffled
chamber design used by other manufactures. The internal tubing
diameter is optimizes performance while the long strand rock wool
sound deadening material provides the mature tone that Supersprint is
so well know for. The stock, one-piece muffler system has a totally
unnecessary, complex design, which includes a built in flapper valve,
on one side of the system only, which has the sole purpose to alter
the sound note at a certain, pre-set rpm. Not a performance related
feature by any mean, as the Supersprint rear mufflers alone do
increase the torque and max Hp by a significant amount, especially at
low rpm. Regardless, the Supersprint system has absolutely no droning,
even at low rpm and high loads.
(Round Tips 980644/980624)
(Dual 80mm Tips 980636/980606)
By using a bolt-on tip design, you have a choice of
either the more conservative single 100mm round tip, which is a direct
fit under the bumper valance, or the more radical dual 80mm quad tips
, which requires trimming the bumper lower valance to accommodate the
twin 80mm chrome tips.
Turbo Down Pipes
The stock down pipes cause a major restriction in the exhaust flow,
partly because of the limited room available in the engine bay, as the
crushed tubes design and the built-in cats, located next to the turbos'
outlet ports, make the exhaust gas backpressure to rise to
less-than-ideal levels, at all rpm and engine loads. This design retains
a lot of heat in the engine, and it's no surprise that the
Lambda (Air/fuel ratio) breaks the low 0.7 barrier. This is probably
necessary for the engine own durability, however it definitely affects
performance in a negative way. On the contrary, the design of the
Supersprint down pipes takes advantage of even the smallest space
available, and frees the exhaust gas flow dramatically. The SS pipe
cross section remains constant all along the down pipes, and the
pre-cats are totally eliminated.
After the down pipes' outlet flanges, the cross
section shrinks down to 60mm, and it is maintained constant all the
way to the tail tips. In place of the stock, quad cat design,
Supersprint uses 2 high volume, high flow, HJS metallic cats, placed
further away from the engine, for the lowest restriction and the best
results. This design has been borrowed from the popular SS E46 M3 exhaust system.
Mid-"X" Pipe Section
The stock Mid pipe has an unbelievable number of crushed sections, for
added clearance. The result is that the flow rate is negatively
influenced by the crooked design and the shrunk-down cross section of
the tubes. Supersprint made its mid pipes with a real "X" section for
balancing the exhaust flow, and most important, without having a single
crush. The needed clearance is guaranteed, nonetheless. Again, a major
improvement over the stock exhaust.
More About Tuning the 335i
There has been rumors rampant among the German tuners about this new BMW
turbo engine. Some of them are aware that the factory tuned it to a higher
degree, compared to what the brochures claim, but few of them actually expected
that the full Supersprint exhaust system would instantly make the 335i faster
and quicker than BMW's own E46 M3! Driving the 335i with the Supersprint exhaust
is a new experience, as the sound may seem soft, when compared to the excellent,
high revving M3.
However, stealth sometimes is compatible with immediate throttle response and
quick acceleration. Supersprint achieved this result without using the popular
exhaust flapper valve gimmick, found on the stock system, as well as on several
other aftermarket exhausts. By using its tried & true method of studying the
engine flow characteristics, and determining the best pipe diameter, the perfect
tube layout and the ideal silencer canisters' design and volume, Supersprint has
again done an excellent job, building a state of the art exhaust system,
perfectly suited for everyday use, which offers unmatched, race car performance.
Supersprint Build Quality
All Supersprint mufflers are of the flow through resonated
design. This means each unit has no chambers or baffles to reduce velocity.
Simply, a straight through in & out design. The internal components are 100%
stainless steel with a high heat resistant rock wool sound suppressing material,
not found in any other systems. This is the reason we can offer you sound legal
performance exhaust systems. Tubing is always mandrel bent for maximum flow.
Flanges and hangers are O.E. or better quality for a perfect fit every time.
Housings are all manufactured from 1.5mm material that is M.I.G. welded at all
seams. The stainless systems are 100% 304 stainless, the mild steel systems are
aluminized on the inside and out, then black heat coated for corrosion
prevention. Supersprint offers the largest tip style choices in the world.