The OEM mufflers - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 31 (permalink) Old 10-29-2019, 01:51 PM Thread Starter
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The OEM mufflers

Just an observation, cuz the weather has me looking at instead of riding my new FJR, but is the entire exhaust made of stainless steel? If so I suspect even the mufflers won't rust out?? But that's totally okay with me because this is one of the few bikes I've owned that didn't come with an ugly OEM exhaust system. Besides looks and getting that "perfect" exhaust note or adding a couple of ft-lbs of torque and a couple of ponies are there any other reasons to eventually opt for aftermarket slip-ons or full systems?

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post #2 of 31 (permalink) Old 10-29-2019, 02:26 PM
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The OE mufflers are not going to rot out, rust away, or fall apart under anything like normal use. IMO, the stock pipes both look and sound very good.

At the risk of starting an argument, installing aftermarket mufflers will not provide any noticeable power gains, at least not by themselves. Going aftermarket can shave a couple pounds of weight, provide some bling, and make more noise. If installing louder mufflers makes someone happy, if it improves their riding experience, that is a Good Thing for them.

I like Quiet. My OE mufflers were quiet and the FJR/Yoshimura mufflers I have now are still Quiet. But my bike is no faster or more efficient.
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post #3 of 31 (permalink) Old 10-29-2019, 02:40 PM Thread Starter
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Thanks Redfish! I'm very happy with the quietness of the OEM mufflers too. I guess it would take a drop or worse to damage the mufflers to the point where I'd want to replace them so at that point I'll find out for sure but assume an OEM replacement for one side will lose out to the cost of an equally handsome aftermarket pair of slip ons.

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Last edited by JunkJacket; 10-29-2019 at 02:44 PM.
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post #4 of 31 (permalink) Old 10-29-2019, 02:45 PM
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JunkJacket, as a general rule "loud pipes save lives..."


If you do want to hack your mufflers do a search for the "trooper muffler mod." I would advise against it but still an option to add a little grumble to an OE muffler

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post #5 of 31 (permalink) Old 10-29-2019, 02:48 PM Thread Starter
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oh (expletive), now look what I started..

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post #6 of 31 (permalink) Old 10-29-2019, 05:48 PM
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It's true that Loud Pipes Save Lives. Even on days that I don't ride the FJR I will run the motor and rev it up. This saves countless lives. I used to run it at least 30 minutes a day just so my Loud Pipes would save a bunch of lives but soon nobody in my area was dying anymore. This led to overpopulation and overly crowded roads. Now I only run my loud pipes some of the time. I am still a local hero just because of the number of lives I have already saved with my Loud Pipes.

@JunkJacket my Pop and I both have FJRs and we have made several trips together. He has a '14A and I have a '15ES his bike has the Yamaha GYTR mufflers while (until recently) I had the OE mufflers. There is usually around 00.010 difference between the two bikes at fill up. Anybody's guess as to which bike will do better.

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post #7 of 31 (permalink) Old 10-29-2019, 06:43 PM Thread Starter
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Quote:
Originally Posted by Redfish View Post
It's true that Loud Pipes Save Lives. Even on days that I don't ride the FJR I will run the motor and rev it up. This saves countless lives. I used to run it at least 30 minutes a day just so my Loud Pipes would save a bunch of lives but soon nobody in my area was dying anymore. This led to overpopulation and overly crowded roads. Now I only run my loud pipes some of the time. I am still a local hero just because of the number of lives I have already saved with my Loud Pipes.

@JunkJacket my Pop and I both have FJRs and we have made several trips together. He has a '14A and I have a '15ES his bike has the Yamaha GYTR mufflers while (until recently) I had the OE mufflers. There is usually around 00.010 difference between the two bikes at fill up. Anybody's guess as to which bike will do better.

HAHAHAHAHA!


For the second part, we ALL know that your dad's is genuinely doing the better of the two bikes.

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post #8 of 31 (permalink) Old 10-29-2019, 09:04 PM
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Originally Posted by JunkJacket View Post
For the second part, we ALL know that your dad's is genuinely doing the better of the two bikes.
Of course we do, he rides the red one!
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post #9 of 31 (permalink) Old 10-30-2019, 02:57 AM
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If you add aftermarket pipes, you'll need a couple of mods.

1. A Dynojet Power Commander fuel mgmt module to get the right fuel/air map to get the little 2-3 more HP gain.

2. Love my Delkevic slip on muffler set:



Quality and great price.

3. And you should be running a slightly higher flow air filter like a K&N air filter.

More air intake, more fuel, fuel burn optimized, smoother throttle due to a Warchild fuel map and more exhaust flow through the Delkevics and shaved a few pounds off the bike. Worth it.

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post #10 of 31 (permalink) Old 10-30-2019, 03:33 AM
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More air intake, more fuel, fuel burn optimized, smoother throttle due to a Warchild fuel map and more exhaust flow through the Delkevics and shaved a few pounds off the bike. Worth it.[/QUOTE]



You donít need a PC for slip ons and there is a lot of testing that shows OE filters are just as efficient for a fraction of the cost, plus better filtering.


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