need help on choice

snake61047

Member
Mar 9, 2013
72
2
34
Northern Illinois
Alright. I'm ordering a pipe tomorrow. I have a Toomey silencer on my machine right now. It will cost me 337 plus shipping to buy the rest. On dk I am looking at an FMF fatty or SST. I need help. I know the fatty and SST are both under 200 with out silencer. I know the SST needs its own silencer and so does the Toomey. I think I can run the fatty with the Toomey silencer but not sure. What is my best route? I have a chambered head on the way. I like FMF and Toomey. What is the best bang for the buck. The Toomey is 279 with out flange and hardware. SST is 198 with flange but no silencer. And fatty is like 160 with flange and no silencer. Thanks.
 
I would go with the Toomey pipe if you got the money. The Toomey silencer will fit an FMF fatty if you decide to go that way.
 
SST is a more high end powerband, most don't have the type of riding area to use it, harder to keep in the power.
In the general engine section there is an old pipe shootout, look through that.
 
SST is a more high end powerband, most don't have the type of riding area to use it, harder to keep in the power.
In the general engine section there is an old pipe shootout, look through that.

With my built engine and sandy trails the sst pulls hard! I love it, my bottom end is good because I didn't put a giant carby on it.
 
The following information was gleaned from threads from those here who cut heads and is what I am led to believe!

Depending on which type of cut the head is, if the cut is toroidal then it favours low/mid, therefore a FMF Fatty or my choice a DMC Alien will suit.

If the cut is hemispherical then the Toomey which is a high pipe would be the obvious choice.
 
I've been told by other people that left bend pipes Toomey FMF are low mid pipes and right bend pipes are high pipes. I thought about DCM but I already have the silencer. I ordered the rest of the Toomey system today. Should be here next week.
 
The following is a good read when choosing ANY pipe for ANY two stroke engine... Don't get stuck on a "name" go for results. The best way to see what works,is to be lucky enough to ride another blaster with the same modifications as yours and the pipe your interested in.....

Ahhhh, the dyno. The myth, the legend. For years, companies have hyped their dyno charts to sell their products. Those beautiful arching colored lines that illustrate horsepower and torque just look so cool and scientific. How can you possibly dispute them? But like most things in life, there’s more that you need to know before you can make an informed decision. Years ago, dyno charts were considered “gospel” by some, but with the flow of information available on the internet, today’s consumers are more educated than ever. Don’t believe it? Do a simple Google search for “Dyno Myths” and you’ll find over 10,000 articles dissecting these issues.

Let’s be real, we live in a world of measures. And why not? Measurements are a great way of comparing the differences between things. Seems funny, but the fact is, we’ve grown accustomed to numbers telling us everything. In this age of 72oz Quick-E-Mart sodas, we tend to think bigger is better.

And for years, consumers would base their exhaust purchase from these measurements. In the past, magazines that relied on a dyno test to pick the winner of “Pipe Shootouts” reinforced the legitimacy of these dyno claims. But as consumers have become more smarter, most magazines now make dyno charts a very small part of any shootout, with “rideability” and lap times playing a larger role.Dynamometers are the machines used to produce those seductive dyno charts. Computers map and plot data to return results that you can comprehend into a grid-like format called the dyno chart. DMC uses this comparative data to measure performance changes (among other things) during the development of exhaust systems. On face value, this is really sorta cool, so why shouldn’t you buy brand X, if it’s dyno chart shows 2 horsepower more than brand Y’s dyno chart???

The "X" Factors Everyone Should Question

There are many variables in dyno analysis but the first being the individual performing the test. For every unique dyno machine, there’s an equally unique operator running it. If you have 10 different dynamometers and 10 different operators, and everyone performed dyno tests on the same bike, you would likely have 100 different results. This means that the same bike could show a 1-5% variance, even after SAE corrections for ambient temperature, barometric pressure differential, altitude, humidity temperature, etc. This assumes that there aren’t any… well let’s just call them “optimistic” dyno operators in the bunch.


Acceleration is defined as the changing of velocity at a more dramatic rate. This is an extremely important performance factor that is not available on most dyno charts. DMC has the ability to chart and produce incredible acceleration by producing the proper blend of torque and horsepower increases over a rideable rpm range.


Most dyno charts flaunt their “peak” performance gain. Do you really buy a pipe because once each lap, or once a weekend, you can use that peak horsepower on that long straightaway? What about the other 98% of your riding time? DMC Afterburners are specifically designed to outperform other exhaust systems on every level with a critical focus on delivering maximum overall horsepower. We don’t pay much attention to claims of “peak” horsepower or torque gains, neither should you. Peak horsepower is insignificant, how the pipe performs through the whole powerband is everything.


Does the pipe pull like a freight train right off idle? Will the big torque gains help you out of a bad situation? Is your bike easier to ride, allowing you to reduce your lap times? These traits can only be verified by actually riding with the system. DMC “blind” tests a minimum of our top 3 exhaust system specifications. Many times our test data agrees with the dyno charts, and sometimes our “best” dyno pipe…well stinks in real life. In all cases we analyze our real-world test data against the dyno charts for future reference.




•Operator error or inexperience?
•Ambient temperature?
•Equipment settings?
•Can the results be duplicated?
•Engine settings?
•Elevation?
•Humidity?
•Fuel used?
•Airbox modifications?
•Jetting changes?
•Any modified bike components?

Look, a dynamometer is an invaluable tool for developing performance products. And of course DMC uses them as a tool for comparative analysis. Our concern is that some companies either intentionally, or due to ignorance, sell their products based on a dyno charts with claims that peak horsepower or torque tells the whole story. Before you spend your hard earned money on a new exhaust, you should take the time to determine what you expect a new exhaust system to provide.

At DMC we are committed to providing better torque, more horsepower and ultimately quicker, more controlled acceleration. Ultimately, that’s what we deliver in a DMC exhaust system. A system that increases overall performance from the exhaust, and delivers the confidence and performance you want. We hope that we have provided enough information so that you can make a more informed decision on all of your performance products. We’re not trying to explain all of the details of dynamometer use, but if you’re really interested in exploring the myths and folklore legends of dyno charts, there are over 10,000 Google sites just waiting for you...
 
Sounds to me like people are trying to sell dmc. Are they a sponser for this site?

I do not sponsor DMC , I have run fmf,toomey,paul turner,pro circuit and dmc pipes. Ended up staying with fmf on my banshee,pro circuits on my cr's,dmc alien on my blaster. Its just what worked better on the setups.
 
Question.

What type of chamber is cut in the new head? Toriodial favors low/mid.

Where do you want the power to hit low/mid or high? Fatty and Alien favour low/ mid.

The choice of pipe should be based on this information.

It is a pretty pointless exercise fitting a pipe which does not compliment other mods or will not give you power where you want it.

I choose the DMC Alien simply because it suits my application, looks good, perfect leakless fitup and last of all a fantastic crisp exhaust note.
 
Sounds to me like people are trying to sell dmc. Are they a sponser for this site?

I'm not a sponsor of DMC,but I posted that write up to help you out,because it applies to ALL pipes.

You would be,or.... perhaps wouldn't be surprised by how many people choose a pipe because it "Sounds cool"........REALLY?
choosing a pipe bcause it sounds cool?
Believe it or not,there are many folks that actually do that. Your toomey is a great choice,and supports porting well.
 
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Sweet, what other mods are you running?

I just put a tordioal head on my bike today from Wwholden. Sorry Joe couldn't wait. I have jetted for the removed air box lid and premix. The plug looks good at 40 degrees. I am looking to put boysen reeds in at the same time I put the pipe on.

Joe I can't wait to get my cylinder ported. Id love to have you do it. It seems like I lost compression when I installed the head. I was getting 100psi cold before and now cant get above 75 psi. I haven't really noticed a power increase either. I did notice a harder kick though?!?!?! go figure. I haven't rechecked the comp with the engine warm. I went to Yamaha for a new head gasket before the install and they gave me the wrong one. I told them which one it was as they were digging thru their box of open gaskets. they thought it was too big. So I used my old one for now. I called and let them know they messed up. I live 45 minutes away from them so they are going to mail it to me for free. I'm hoping the Toomey will help with top end and the tordioal head will help in low mid.
 
Did you leak test to make sure that the old head gasket was air tight.

You may be defeating a purpose fitting a pipe which favours highs and a toroidial head which suits low/mids, the motor will not know wether it is Arthur or Martha.