My mid-engine Mini with its 2. Of course if you add up the cross-sectional area of three baffles, it meant that the car was breathing through a soda straw.
Oh, and the huge back pressur pushed the end cap out of the housing, not to mention that the bolts retaining the end cap extend into the interior, guaranteeing that they'll bind up and snap off. Supertrapps were designed back in the 's. The first ones had a long J bolt and a cap to hold the discs in place, you can still buy that exact unit as a universal muffler. Like this:. The only real change they have made is the bolts around the perimeter and those bolts will seize in a skinny minute.
Had three on dirt bikes, with enough discs to make decent top end power they make ear bleeding noise. Take out enough discs to shut it up, everything's corked off, might as well run a turbo muffler.
Nope, no more. Buy a good "turbo" style muffler and get better power with less noise on the street and the track. I don't know from a power perspective, but i've NEVER heard a supertrapp sound good, and they're all loud as berkeley unless you stuff them. Every one I have ever used here int he rust belt was rusted. The little nuts and bolts are useless. Just get a good free flow muffler.
Size your pipes and muffler to the motor. There was a long discussion about this quite some time back. I liked the sound on my old SHO. The bolts vibrate loose As far as flow vs not-flow the car dyno'd 5 to the wheels higher with just the trapps swapped for the stockers, in street mode 4 baffles IIRC. Car was a bit more quiet than a fellow SHO club members ride with flowmasters in the 4 disc config. The only part that made it all strange was the Yamaha V That said, a ton of folks loved the sound and an equal amount hated it.
Vid Clip. I used to be an engineer for a sister company to Supertrapp, and they sponsored my autocross car. I dyno tuned my car on their chassis dyno. It was a stock class '89 Civic si. Up until the time I had the supertrapp system installed, the car still had a stock exhaust on it.
Adding a mandrel bent, 2" exhaust and ST muffler resulted in a gain of 2hp. Subsequent tuning of the ST muffler added another 6hp. I don't have any bias towards ST, as the current owners screwed me over and they didn't develop the technology, but I don't know of any other system that can add 8hp and reduce weight as much as that system did on my car.
Just food for thought. They're well known for breathing well from the factory. The Fella with it on his 2. Interesting comments?! SuperTrapp Industries, we will have been in business for 40 years next year, we didn't get that far by making something that didn't work when applied to the proper application, just as well-we have also come a long way and learned a lot and improved a lot over the years.
Although we are predominantly motorcycle related, we do a substantial amount of business in automotive applications. Please, if you have questions, make a posting on our forum, or send us an email or call. We have done a lot of different applications, but if it is something we have not done or seen, we'll be honest enough to tell you that also.
KByou didn't have enough discs on there to flow, creating the large amount of back pressure. It also appears that in the photo, the disc screws are way overtightened. Comparatively-I run 8 discs on my daily driver Caprice with Bravenrace-also-thanks for your honest observations-regardless of history we've all had those!
I also, ran a Stainless Superlight on my 91 Civic with great results. I realize there is no perfect solution to the issue of exhaust noise, everything's a tradeoff. These also contain their diffuser disc fine-tuning system. The SuperMeg is a 2-into-1 exhaust with a deep throaty growl.
Black and Chrome versions are available for most models. SuperTrapp Exhausts come with a closed end cap that forces all of the exhaust gases to exit through the gaps of the diffuser discs. These will give you a higher air flow and additional power gains. Locate your nearest dealer , view the Exhaust range online , or call 07 for more information on this or any product. No spam, just great V-Twin info. Cant find the parts you are after? Fill in the below form and one of our sales team will get in touch with you to see what we can do to help.
Prices Subject to Change Without Notice. Log In. Supertrapp Performance Exhaust. Repeat this process until the misfire is eliminated. In some cases, this problem is an indication that the exhaust is too free flowing i. Head pipes too large in diameter or muffler core is too large for the motor configuration you have. As always, check your spark plugs to verify the tune is correct. The plugs should be a light tan in color if tuned properly. Longer pipe lengths lessen the volume of sound and shorter pipes increase the volume of sound.
Something to keep in mind is that the human ear is more sensitive to higher frequencies; this means that we perceive these sounds as louder. If a muffler or baffle is added to the equation then the pipe size has only a minor affect on the overall sound.
Also, a muffler can alter sound significantly depending on the design. Many technologies are employed in the design of mufflers or baffles. At this point we need to understand the difference between a muffler and a baffle. A muffler is a mechanical assembly that employs multiple components and technologies to reduce sound in an exhaust system.
A baffle is a mechanical device used to disrupt sound waves. In most cases baffles are used as a component in a muffler assembly. Muffler assemblies are far more complex. These assemblies can incorporate many components to alter sound waves. These components can range from packing materials such as fiberglass, ceramic wool, and stainless wools to perforated tubing, baffle tubes, and baffle plates or any combination of these components.
Due to the vast design configurations and their abilities to manipulate sound, there is no hard fast rule that can be given to say how a specific muffler will sound.
All street exhaust designs are a balance between power and appropriate sound quality. Something else to keep in mind is that the engine configuration plays the biggest part in overall sound. Compression ratios, cylinder heads, cams, and ignition timing all affect the sound output of any given engine.
Slip-ons are just as they infer. Loosen the clamp at the inlet of the muffler, remove the mount bolts from the muffler and remove the muffler from the bike. Reverse the process to install the new mufflers. A performance exhaust is designed to improve airflow through the engine. Anytime you can improve the efficiency of airflow through a combustion engine you can increase performance. SuperTrapp discs provide a scavenging effect. As hot exhaust gases pass through the discs to exit the muffler they enter a larger area, creating a slight pressure drop as the gas expands, creating a scavenging effect.
This larger charge lets the engine create more power and this is why it is very important to use discs. The discs are always installed with the flat surface against the end of the muffler and the tapered outer lip pointing away from the muffler. Always remember to use an end cap with the discs. The end cap is formed to nest into the discs and is an additional indicator of the correct installation direction. Check the color of your spark plugs. You need to remove discs.
You need to add discs. Click here to view an example of these 3 spark plug colors. Watch our video for a detailed explanation and demonstration. Closed End Cap vs. Open End Cap Video. Part Number Location Video. Home FAQ. Questions What is the major benefit of using SuperTrapp products? How do the diffuser discs work? How many diffuser discs should I run? How do SuperTrapp mufflers reduce noise?
Will removal of the packing material increase performance? How often do I have to re-pack? How do I repack my IDS2? Do I need to re-jet? Will I be able to maintain my center stand and drain plug access? What is the warranty on SuperTrapp exhausts? How tight should disc screws be? Do disc screws need Locktite or an anti-seize compound on them?
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