Exhaust test Suzuki Bandit 650

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Exhaust test Suzuki Bandit 650
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Exhaust test Suzuki Bandit 650

Exhaust test Suzuki Bandit 650
Speed ​​of sound

The Suzuki Bandit 650 is one of the bestsellers in Germany. The accessories market is also developing rapidly. How do the offered retrofit silencers?

Holger Hertneck

09/14/2006

One of the most common conversion requests for motorcycles concerns the silencer. The series pots are usually too bulky, too inconspicuous and too heavy for their owners. Even if the
Exhaust the Bandit 650 doesn’t necessarily come across as bulky, at least the other two attributes apply. And if you have to get a replacement after a fall, you shouldn’t be happy about the juicy new price of around 550 euros.
The accessories market offers much cheaper alternatives.
And they should often even tease out a few more horsepower and sound more robust. If you want to know how the test candidates from Gotz, GPR, Holeshot, Hurric, Nikko, Shark and Streetfighter sound compared to the standard system
the sound recordings on the Internet at www.motorradonline.de. Which silencer is the most convincing in terms of sound is a must
everyone decide for themselves. The ratings for performance, fit, workmanship and installation effort can be found on the following pages.
The systems scored the most in the criteria
Collect top performance and performance development. The experts from the MOTORRAD test department paid particular attention to the development of power and paid attention to every slight drop in the power and torque curves in the curves determined on the test bench, which are clearly noticeable in practice.
MOTORRAD determined stationary and driving noises in accordance with the applicable regulations (see also Noise Measurements box) on a cordoned-off airport site. To the exhaust-
The inspectors from TuV Sud in Boblingen took care of the search.
There were no points for the measured noise and exhaust gas values, but only test candidates who met both the Ge-
noise limit values ​​as well as the specified exhaust gas limit value (see box catalytic converter problem on page 69) were given
a final MOTORRAD verdict. And that is ultimately
shockingly few subjects. As is often the case with silencer tests, the driving noise hurdle turned out to be too high for many specimens. For some it is even too high. How the affected accessory dampers got the EC type approval is simply a mystery.
Is it exactly what a lot of motorcyclists want? an EC-approved system with the most robust sound possible. But you should be aware that, despite the test seal on the final pot, you can get into difficulties during an inspection.

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Speed ​​of sound

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Bandit 650 original silencer

Provider: Suzuki International Europe, Telephone 06251/57000, www.suzuki.de;
Jacket: stainless steel, round; Price: 549.26 euros; Variants: none

Plus perfect fit; easy to assemble;
adequate peak performance and good performance;
very good exhaust gas behavior; Standing noise within tolerance value; Driving noise limit complied with
Minus Very heavy weight
Conclusion Buyers are on the safe side with the original system. It is heavy and comparatively expensive,
to fit exactly and foolproof, because they
consists of one piece
-Verdict: good

GPR slip-on

Provider: THG Technischer Handel, Telephone 02661/63240, www.bikersandmore.de; Coat: Poppy
(Stainless steel in carbon look), oval; Price: 518 euros; Variants: stainless steel (around 469 euros, oval 499 euros),
Poppy round (499 euros), carbon oval (518 euros), Inconel (around 518 euros, oval 541 euros)
Plus very light weight; detailed assembly instructions; high peak performance and very good performance; very good exhaust gas behavior; Standing noise within tolerance value
Minus Very complex assembly; no holder on
Intermediate pipe available; fiddly metal clamp on the damper; Driving noise limit value exceeded very clearly
Conclusion Neatly processed, very light accessory damper,
which scores with high performance, but has far too high driving noise values
-Verdict: ?? *

Gotz rear silencer

Provider: Gotz, Telephone 07476/933150, www.goetz-motorsport.de; Jacket: stainless steel, oval; Price: 315 euros; Variants: carbon and titanium sheaths in preparation (price around 375 euros each)

Plus very light weight; Excellence and
Performance development at series level; very good exhaust gas behavior; Standing noise within tolerance value
Minus Very complex assembly; no assembly instructions;
easy processing; moderate fit; there is no holder on the intermediate pipe; fiddly metal clamp on
Mute; Driving noise limit clearly exceeded
Conclusion Very simple damper, the above all
due to its low weight and in comparison
the cheapest purchase price stands out, but clearly
has excessive driving noise levels
-Verdict: ?? *

Holeshot Master

Provider: Mizu, Telephone 07731/90670, www.holeshot.de; Jacket: aluminum, round;
Price: 408 euros; Variants: Titan (510 euros)

Plus significant weight savings compared to the standard damper; rubber-coated tension springs; high peak performance and very good performance; good exhaust behavior; Standing noise within tolerance value
Minus Fiddly metal clamp on the damper;
Driving noise limit clearly exceeded
Conclusion Neatly processed damper in the Sebring factory
in Austria and a high level of performance
has, but is clearly too loud
-Verdict: ?? *

Hurric RAC 1

Provider: Fechter Drive Motorsport, Telephone 07023/95230, www.fechter.de;
Jacket: aluminum, oval; Price: 368 euros; Variants: carbon (468 euros)

Plus significant weight savings compared to the standard damper; rubber-coated tension springs; neatly processed; screwed holder; very good exhaust gas behavior; Stationary and driving noise almost at series level and within tolerance
Minus Somewhat unclean weld seams on the intermediate pipe;
significant performance losses compared to the series system
Conclusion Somewhat weak end pot from Italy in terms of strength,
who is one of the few who has a high-quality, screwed holder and complies with the noise limits
-Verdict: satisfactory

Nikko Supersport NX

Provider: Team Metisse, phone 07191/302030, www.metisse.de; Jacket: aluminum, oval;
Price: 475 euros; Variants: carbon and titanium (575 euros each)

Plus significant weight savings compared to the
Series damper; Bracket on the intermediate pipe with welded nut; good fit; high peak performance and very
good performance; Standing noise within tolerance
Minus Fiddly metal clamp on the damper;
Driving noise limit clearly exceeded
Conclusion Neatly processed and perfectly fitting damper
with high performance, but clearly too high driving noise values
-Verdict: ?? *

Shark Competition DSS

Provider: Fechter Drive Motorsport, Telephone 07023/95230, www.fechter.de;
Sheath: carbon, oval; Price: 498 euros; Variants: aluminum (398 euros), titanium (498 euros)

Plus significant weight savings compared to the
Series damper; rubber-coated tension springs; clean
processed; screwed holder; very good exhaust gas-
keep; Stationary and driving noise values ​​almost on series-
level and within tolerance
Minus Somewhat unclean weld seams on the intermediate pipe;
significant performance losses compared to the series system
Conclusion Like the Hurric built in the same company
the Shark falls significantly in terms of performance, but it is one
the few with a screwed holder and absolutely legal in terms of noise levels
-Verdict: satisfactory

Streetfighter rear silencer

Provider: Louis, Telephone 040/73419360, www.louis.de; Jacket: aluminum, round;
Price: 348.95 euros; Variants: none

Plus Very significant weight savings compared to the standard damper; very good exhaust gas behavior; Standing noises within tolerance; Driving noise limit exceeded by one dB (A) and thus just within the tolerated range
Minus Somewhat unclean welds on the intermediate pipe; Performance losses compared to the series system; fiddly metal clamp on the damper
Conclusion Inexpensive, easily processed aluminum-
Lightweight dampers, still tolerable noise levels, but poorer performance
than with the series system
-Verdict: satisfactory

Noise measurements – be careful, decibels

A particularly sensitive topic, not only when testing an exhaust system, but above all when inspecting road traffic. Because the police have no mercy when someone is on the road with an exhaust system that is too loud. So far, there has only been the option of measuring stationary noise at the roadside. The tolerance limit is five dB (A) above the value entered in the vehicle documents.

If the law enforcement officers have doubts that it is a regular damper, they are entitled to confiscate the motorcycle for a driving noise measurement. In any case, this threatens all vehicles that exceed the tolerance limit during the stationary noise measurement. Then it means: either drive up with an approved system at the next opportunity or agree to an expensive driving noise measurement.

Standing noise measurement: The microphone is positioned at the level of the exhaust outlet at an angle of 45 degrees to the vehicle’s longitudinal axis and at a distance of 0.5 meters. Measurements are made at half the nominal speed (for motorcycles whose nominal-
speed is over 5000 rpm – which is the case with almost all models). The result is the highest of three measured values, rounded to full dB (A).

Driving noise measurement: A large area of ​​normal asphalt serves as the measuring section, which must not have any sound-reflecting objects within 50 meters of the microphone. The motorcycle approaches the measuring section in second and third gear at 50 km / h (see illustration). At the beginning of the route, the driver fully opens the gas and accelerates to the end, where he suddenly closes the gas again. Two passages from the right and two from the left are recorded in each aisle. The total of eight measured values ​​are rounded and then a dB (A) tolerance is deducted. The mean value of this ultimately results in the all-important driving noise value.

Vehicle requirements: The test vehicle for homologation or re-measurements of accessory silencers may, in series trim, exceed the value entered in the papers – in the case of the Bandit 79 dB (A) – by a maximum of three dB (A), but only by the valid limit of 80 dB (A) one dB (A). As a result, the Bandit can reach a maximum of 81 dB (A). The stationary noise value, with the Bandit entered 89 dB (A), may also be three dB (A) above the entered type approval value. The legislature does not prescribe a limit value here.

During the test, MOTORRAD allows the accessory silencers to meet the tolerance limits permitted for the series system. In the case of an official homologation, the retrofit dampers would have to comply exactly with the driving noise value of the original system, so strictly speaking they should not be louder than the measured 79 dB (A) of the standard Bandit.

KAT problem

Retrofit silencers always ensure
Conversation piece. The end of the 90s was
Many buyers of accessory systems with an EC operating permit do not realize that they no longer have to carry any papers with them, as was still necessary in previous years for systems with ABE. Even a number of police officers did not know anything about it for a long time. A clearly visible badge or embossing (see photo) on the damper is sufficient.
Since this year there has been uncertainty as to whether retrofit systems have to have a catalytic converter, even if the production model has one. After all, motorcycles built in 1989 or later now have to undergo an exhaust emission test every two years-
search (AUK) ?? commercial vehicles
even once a year. The situation is tricky. All motorcycles homologated according to Euro 3 from 2006 onwards that have a Kat as standard are only allowed to
a retrofit damper can be retrofitted with a catalytic converter. Otherwise you will likely have problems with the exhaust emission limits at the AUK.
The situation is different with older motorcycles, for example motorcycles approved according to Euro 2. Even if they are equipped with a catalytic converter as standard, retrofit silencers without a catalytic converter can be installed. However, only if they received an EC type approval before May 18, 2006. If the value specified for the motorcycle (by the manufacturer) is exceeded at the AUK
should, is there just a note in the test report? at least the surveillance associations in most federal states have been instructed accordingly. The upper limit for the decisive CO content is in any case 4.5 percent by volume. And a properly adjusted motorcycle should be able to do that even without a catalytic converter.
That in the case of the present test Suzuki allows a limit value of 4.5 volume percent CO for the Bandit 650 in spite of the (unregulated) catalytic converter, appears at the latest when looking at the significantly better results (see table on page 66).
incomprehensible. Nevertheless, it is gratifying that all exhaust systems examined are virtually clean-
men emerged and, with one exception, even fell below the value for motorcycles with a regulated catalytic converter (0.3 volume percent CO).

Conclusion

The original muffler cuts under consideration of the MOTORRAD evaluation criteria
best of all: perfectly fitting, decent performance and absolutely legal. Just what the price and
In terms of weight, it is in some cases significantly higher than the range of accessories. The pot buyer has to decide for himself whether one is prepared to accept a loss in quality for the lower costs. Just as he has to bear the risk if he chooses one of the retrofit dampers that are too loud. These specimens did not receive a MOTORRAD judgment, even if some of them are blatantly lighter than the Japanese original and show off with impressive performance.

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