Want to Modify your Motorcycle Exhaust? Watch this First

Lets discuss traditional full Exhaust vs slip on and what are the pros and cons. Is it worth it to do a full exhaust?

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00:00 Rev it!
00:21 What is an exhaust?
03:16 Why modify?
04:37 Pro and Cons
07:19 Piggy back ECU or Flash ECU
08:50 The truth about slip ons

[rylle]

I like bike since i was 12.. Now that i am 20 and still studying, i wish to have motorcycle but money is the problem, Hahahah

i watch yammie noob for year and i enjoy watching him explain about motorcycle/parts of motorcycle, i get a chance to see my dream bikes

[exothermal.sprocket]

As a mechanical nerd and sympathizer, I cannot fathom buying a new/ish bike and leaving all the choking, restricted, stupid crap attached to that machine and riding it in such a diminished way. I paid for the whole bike with all the baked in potential, I want to experience all of the potential. Not the operating conditions of a bunch of bureaucratic overlords who think they can tell everyone else in the world how they should be living their lives. Based on how little air is pumped through small engines in the USA, how few of these engines are running in a given time and space, the bureaucrat EPA needs to get their grubby paws out of the powersports industry 100% and focus on something that actually makes a difference.

[michaelfink]

Full exhaust, while not something I can usually feel, wow, does it sound good. And that doesn't mean "loud", yes, they are usually louder, but the unrestricted path just changes the character of the bike in a way that I've never found a slip on can provide. My last bike had a full system, my current bike just had headers with the stock exhaust can; the difference is amazing!

That said, it's a lot of work to do a full exhaust and if performance is the goal, there are almost certainly better ways to spend a few thousand dollars. It's also not exactly a "great job", it's dirty, there's never enough space to work easily and for a fared bike, you might have to take the thing into about 20 pieces before you can get at what you need. On my current bike (S1000XR) I had to pull out the radiator and drain down the whole cooling system to get the pipe on there. TLDR; it's a PITA to put on a full exhaust.

[alexdennison]

ECU flash is for sure the way to go. I did a full exhaust and tune a few months ago and omg the difference is incredible

[johngibbles]

Love how you mentioned the weight i dropped alot of weight on my 150cc scooter that way and stock was 350 now its under 300 and the muffler was a major part of that weight reduction but dont forget the carb tuning thats needed to go with the extra air you briefly went thru the fuel to air ratio and air filter too

[WheelDylan]

I've never seen the sun shining at 0:16 hours 🤣

[edge]

The Tuono and RS 660 have the best looking stock exhaust systems on the market. Compact and sleek.

[ryanashley]

‘Murica LOUD PIPES SAVE LIVES ‘Murica 🇺🇸 🇺🇸 🇺🇸 🇺🇸 🇺🇸

[snoopy]

Another interesting vid Yammie! However, IMHO I think some clarification is needed regarding the pros and cons of swapping out a stock exhaust for an aftermarket performance one. With so many commenting below regarding extracting greater performance from their bikes, it seems clear that appearance is less of a concern, but like you said, we are vain creatures. I think you're absolutely right in stating that there doesn't seem to be much logic in the massive layout for such a small performance gain on the street. In Australia, this is particularly pertinent since the cops are dynamite in picking up speeding riders and with a speed camera around every corner, its just not worth the huge fines or probable loss of our licences - best to leave it for the track if going as fast as you can go is what you want to do.

But the elephant in the room, as you stated, isn't just the fact that these exhausts are illegal pretty much across the whole planet, but WHY they are illegal. Simply put, approximately 26 - 32% of carbon emissions in and around our major cities in developed countries are produced by road users (WHO Climate Report 2024) and removing the catalytic converter, particularly if everyone does this, is one of the contributing factors to worsening climate problems, causing increased respiratory problems across out major cities, and really isn't necessary to enjoy higher performance, awesome sounding bikes and cleaning up the weight and appearance of our rides. For those out there that think that small internal combustion engines aren't a big issue and emissions laws are a government ploy to control the population, think again. Small engines, and bike engines in particular, belch out far more noxious gases (CO, CO2, N2, CXHX) as a ratio of their displacement compared to other internal combustion engines! This is why emissions laws are tightening up everywhere. So if we want to continue riding in relatively good health or even want our kids to enjoy the same thrill we do one day while still being able to breathe, these are important considerations.

Is the answer electric? Well these bikes are definitely a real buzz, but with my 124 mile round trip commute at 70mph, I wouldn't get very far - so no - not the answer for me! However, if we look to our performance car brethren, adopting a responsible approach is easy by using better headers, better designed collectors and a high flow muffler WHILE ALSO COMBINING with a high flow cat with an ECU remap - this could be just the ticket for "responsible performance gains". This not only satisfies those seeking the 4 or 5 extra ponies, weight savings, better appearance and sound, BUT ALSO ensures that we clean up emissions at the same time, thereby also remaining legal, licenced and fine free! Yes, they are a little more expensive, but if you've already committed to shelling out hundreds and hundreds of dollars on a full exhaust upgrade and ECU flash, then this is a responsible minor additional expense that provides that performance upgrade and keeps you legal while enjoying your pride and joy. At the end of the day, we all want to have fun on our bikes and want to do that for as long as we can. And before anyone argues that cats are restrictive or heavy, unless you're riding a race bike every day on the road, performance loss or restrictions caused by a high flow cat are so tiny, that it is a negligible blip on the output charts!

Ultimately, I'm with you in thinking its just probably not worth the big bucks for such small performance gains while encouraging us to be a little more risky on the road which may eventually result in tragic outcomes - no matter how good we think we are, we cannot control other road users. If speed and performance is your passion, and I'm fully on board with that, get a track bike and go nuts! On the road however, there are other out an aftermarket exhaust WITH a high flow cat.

Stay safe and keep the shiny side up!

[julian]

The youtube algorithm is really funny sometimes. I was watching your former employee's video about slip-on exhausts and the myth of added power that come with such an upgrade that I kept ignoring these past few days until an hour ago. Then when I refreshed the page, here you are with a video about an exhaust system upgrade! Crazy. Always listening, it knows your deepest desires. Shit.

[jakeschwaller]

Great vid, only one thing missing here, Yammie. Might not only need to do an ECU flash to fix popping on deceleration, another consideration is if the bike has secondary air injection (SAI). I did a decat on my '22 Triumph street scrambler, and even the flash did not help with the machine-gun like popping I had every time I engine braked. I had to remove the SAI entirely and use a plug to trick the O2 sensor.

[cruze]

Teacher yammie teaching squids some basic fundamentals 0:54 🤓

[joshXnovak]

0:20 Yammie Noob Presents: Engineering Explained

[vhayne]

Disagree about the pops and crackles on decel. I love that shit. :)

[forzatech]

I just put a Akropokic slip on for my m1000rr because it’s still under warranty. Sounds better than stock.

[rm]

My vtwin Suzuki TL1000R sounds godly with the pipes it has on it.

[coreypickens]

When will we as a group stop incorrectly utilizing the word "backpressure"?
Because on a 4 stroke NA ICE backpressure is litterally the enemy, any amount is bad, don't believe me though just put your bike on a dyno and ram a metal tranny funnel (skinny end first) into your exhaust and see what happens.
SCAVENGING is the correct word for what we want in an exhaust system, it's what's lost when someone swaps out to a pipe size that's too big for their engine.
Exhaust gas velocity is a key factor of scavenging because gases moving at higher velocity have a lower pressure (Bernouli effect, look it up. I may have spelled his name wrong oh well), low pressure is what we want in our exhaust, particularly at the exhaust valve and collector because that contributes to an overall "suction" effect pulling exhaust gasses out of the cylinders, and once we wrap our squid brains around the pressure and velocity of the gasses then we can start thinking about how the sound waves bounce around inside the system creating their own little pressure zones.
Have a conversation with a Yamaha engineer, it'll be very eye opening because they have a better understanding of what goes into a good system vs other vehicle makers because they also make musical instruments.

[michaeldeliyanis]

Clear, Simple, Informative.
Thank you.

[zacharyflack]

Biggest defense I can provide for a power commander is that they don't void warranty's on a newer bike. Doing an ecu tune on a bike with a warranty almost certainly voids it. Thats at least my reasoning why I went PC5 instead of ecu tune

[davew]

I recently did some long-term maintenance on my 2007 R1...which I've owned since new. 13 years ago, I had removed the mufflers and cat-converter for a stainless replacement from Yoshimura...mainly for aesthetic reasons. This time, I removed the whole exhaust system, doing some much more in-depth maintenance. Cleaning them up, I was pleased to find out that the stock headers( and the manifold ) were also made of titanium...weighing only 1.3kg. Back in the day, the marketing material had only made a noise about the mufflers...and the workshop manual says nothing about the alloys used, anywhere else. I don't really care about the weight savings...but, cleaned and polished up now, they're beautiful to look at.