Akrapovic Exhaust - no baffle

11147 Views 20 Replies 8 Participants Last post by slowspeeder, Oct 17, 2019

Gsmit207

Discussion Starter · Mar 9, 2018

Evening all,

I've recently purchased (but not yet fitted) the Akrapovic low-slung exhaust (S-Y7R1-HAFT).

I preferred the look of the version with the carbon end cap, but bought the metal version as the carbon one has a fixed baffle, whereas the metal one has a removable baffle. I plan of removing the baffle for the grunty noise. I am not planning on fitting the optional cat.

My question is (and I've seen various similar comments on other exhausts...) if I don't fit a cat or baffle, do I run the risk of the bike running lean, and causing potential problems?

Any advice welcomed, especially by those who have experience with the same exhaust.

G

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chop_juice

· #2 · Mar 9, 2018

Hi,

I have the carbon underslung. It is possible to remove the baffle but its not easy. A couple of youtube vids. To remove the carbon baffle you need to drill out the weld (akro schematics show where as do youtube vids).

Then you need to pull it out, don't bother with pliers or pushing the only way is a 'slide hammer'!!!! £20-£30 ebay spend for it! For those trying to remove any manufacturers baffle buy a SLIDE HAMMER!

re the underslung lean with baffle out. I can only comment for carbon tip version, i personally found it lean. Many mt07 vids have commented the same.

Only had a quick ride and that was my personal experience. Dyno tech perspective I wouldn't know.

It was too loud for me, cops would hear you a mile off. I have completed the drill holes mod on baffle, which is better than stock and its not so lean.

If going baffle out I would definitely consider a power commander and if doing that get the air filter. ...lots of good reviews of that performance mod.

Likely there are comparison power commander vids/graphs out there to show baffle in out etc.

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chop_juice

· #3 · Mar 9, 2018

worth noting, doubt baffle out causes problems. Loads have done it so am sure fine ...but am no mechanic.

Gsmit207

Discussion Starter · #4 · Mar 9, 2018

chop_juice said:
Hi,

It was too loud for me, cops would hear you a mile off. I have completed the drill holes mod on baffle, which is better than stock and its not so lean.

If going baffle out I would definitely consider a power commander and if doing that get the air filter. ...lots of good reviews of that performance mod.

Likely there are comparison power commander vids/graphs out there to show baffle in out etc.

Thanks Chop Juice,

How 'extreme' did you go with drilling the baffle? Did you find a nice comprise between standard baffle and no baffle?

Ideally I wanted to remove it, but I can't be bothered with the extra hassle and money of power commanders etc.

chop_juice

· #5 · Mar 11, 2018

Not very extreme. Easier to make holes bigger which i still need to do. If i recall correctly it was 2 holes per pipe (4 in total) 4-6mm but cant remember exactly. I need to get baffle out and make holes slightly larger as could do with being louder still.

Im not convinced baffle out will make that much diff to performance. Ear plugs reccomended!

Troy Abbott

· #6 · Mar 13, 2018

Gsmit207 said:
Evening all,

I've recently purchased (but not yet fitted) the Akrapovic low-slung exhaust (S-Y7R1-HAFT).

I preferred the look of the version with the carbon end cap, but bought the metal version as the carbon one has a fixed baffle, whereas the metal one has a removable baffle. I plan of removing the baffle for the grunty noise. I am not planning on fitting the optional cat.

My question is (and I've seen various similar comments on other exhausts...) if I don't fit a cat or baffle, do I run the risk of the bike running lean, and causing potential problems?

Any advice welcomed, especially by those who have experience with the same exhaust.

G

Yes, the bike comes from the factory already running lean to meet emissions standards. Removing the catalytic converter and baffle will cause it to run even leaner which is harmful to the engine. I recommend an ECU flash to remove the restrictions put in place that creates the issue in the first place. The ECU flash allows you to also upload Power Commander fuel maps that you can find online for similar or same setups. I am no mechanic, but I have been doing my own research as I plan on installing a full aftermarket exhaust myself. There are plenty of videos on YouTube on the subject, mainly for the FZ-07 which has the same engine/exhaust/ECU. Ultimately, the optimal solution is to have a dyno engineer tune the bike.

slowspeeder

· #7 · Sep 20, 2019

Gsmit207 said:
Evening all,

I've recently purchased (but not yet fitted) the Akrapovic low-slung exhaust (S-Y7R1-HAFT).

I preferred the look of the version with the carbon end cap, but bought the metal version as the carbon one has a fixed baffle, whereas the metal one has a removable baffle. I plan of removing the baffle for the grunty noise. I am not planning on fitting the optional cat.

My question is (and I've seen various similar comments on other exhausts...) if I don't fit a cat or baffle, do I run the risk of the bike running lean, and causing potential problems?

Any advice welcomed, especially by those who have experience with the same exhaust.

G

I have watched over 100 youtube videos of every different exhaust for the XSR700 and I have narrowed it down to this exact exhaust. It looks low key and it matches the bike so perfectly, it is also makes the best exhaust note in all of the land. I am looking to buy the exact same one, it looks better than the ones listed for the XSR700 on Akra's website.

Just some questions if you don't mind helping me out
Did you have to modify it at all to get it fitted?
Did you flash the ecu?
Did you install a power commander?

Any engine light issues after removing the baffle?

Any help is much appreciated!

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RobZilla

· #8 · Sep 21, 2019

Did you have to modify it at all to get it fitted?
Nope. Super easy, just a few bolts.

Did you flash the ecu?
Yes. Best way to go is to mail in for a reflash and be done with it. These guys have custom built maps that are ideal for the mods you have. You should pull the intake snorkle out at this time too.

Or you can pay more for the flashtune interface cables and license and flash it yourself with ok maps. Or buy an autotune for another >$300 and go that route and custom build a map.

Did you install a power commander?
No need. Flash tune imports PC maps. If you mail in you will get a custom tuners map.

Any engine light issues after removing the baffle?
No.

If you remove the air intake snorkle and change the filter you will need a tune but this is where performance gains have been made. Keep in mind the performance gains don't turn it into an R1 that can pull 100mph wheelies... just opens it up a bit.

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slowspeeder

· #9 · Sep 23, 2019

RobZilla said:
Did you have to modify it at all to get it fitted?
Nope. Super easy, just a few bolts.

Did you flash the ecu?
Yes. Best way to go is to mail in for a reflash and be done with it. These guys have custom built maps that are ideal for the mods you have. You should pull the intake snorkle out at this time too.

Or you can pay more for the flashtune interface cables and license and flash it yourself with ok maps. Or buy an autotune for another >$300 and go that route and custom build a map.

Did you install a power commander?
No need. Flash tune imports PC maps. If you mail in you will get a custom tuners map.

Any engine light issues after removing the baffle?
No.

If you remove the air intake snorkle and change the filter you will need a tune but this is where performance gains have been made. Keep in mind the performance gains don't turn it into an R1 that can pull 100mph wheelies... just opens it up a bit.

So S-Y7R1-HAFT fits the XSR700 with no problems? Why would the dealer tell me it wouldn't fit without modification.

To be honest, I'm not looking for HP gains, I just want the exhaust to be louder so I don't have to look down at the tach to see my rpms since I can't hear it. I hope I don't need to mail in my ECU to have it flashed if all I wanna do is change the exhaust and remove the baffles.

Aussie

· #10 · Oct 13, 2019

I just tried the baffle out on this exhaust today. Sounds great but way too loud. I drilled 4 x 7mm holes in the baffle pipes and it isn't much louder than before. Hopefully there is a good compromise in there somewhere.

RobZilla

· #11 · Oct 13, 2019

Baffle out with earplugs 😎

slowspeeder

· #12 · Oct 13, 2019

I will always wear earplugs when I ride, even with stock exhaust I like to wear ear plugs - the wind noise in my helmet is loud enough to destroy your hearing over time.

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RobZilla

· #13 · Oct 13, 2019

slowspeeder said:
I will always wear earplugs when I ride, even with stock exhaust I like to wear ear plugs - the wind noise in my helmet is loud enough to destroy your hearing over time.

^^^^^^^^ facts, sir.
Me too.

Aussie

· #14 · Oct 14, 2019

Had a long ride today on the commute to work and it is a little raspy above 5k but down low, pretty much the same. All up, a minor improvement. I've been riding 25+ years and never used ear plugs and had my hearing checked last year and all good, but each to their own. It is worth looking after your hearing.

RobZilla

· #15 · Oct 14, 2019

I find the earplugs greatly reduce fatigue while riding as well as increase concentration. Similar to noise canceling headphones on an airplane reducing engine/wind noise and preventing fatigue. I think it's something everyone should try and see if it's for them. It's not like you can't hear anything, it's all just brought down 15dB or so.
Also with the baffle out, in its sweet spot 4-7k or so it smooths out and isnt as thumping loud so if you keep the rpms up a bit it's not as bad.

slowspeeder

· #16 · Oct 14, 2019

Aussie said:
Had a long ride today on the commute to work and it is a little raspy above 5k but down low, pretty much the same. All up, a minor improvement. I've been riding 25+ years and never used ear plugs and had my hearing checked last year and all good, but each to their own. It is worth looking after your hearing.

I been riding for 5 years, djing for 15 years, my car also has 2 12" subs and I pound my music wherever I drive but my hearing has not been affected but riding my bike seems to be the most disturbing from the wind noise, which is why I choose to wear ear plugs, hearing the wind isn't nice.

gnarlydog

· #17 · Oct 15, 2019

slowspeeder said:
I will always wear earplugs when I ride, even with stock exhaust I like to wear ear plugs - the wind noise in my helmet is loud enough to destroy your hearing over time.

it probably depends on the helmet.
Here in Queensland I can't ride with a full face helmet that is low on wind noise. The actual design of a helmet to prevent wind noise usually negates much air circulation and is best suited for colder climates. In summer I have to ride with a MX style helmet or I risk heat stroke.
So, plugs it is, coz MX helmets are very loud at highway speeds

Rainbow Beach_3 by gnarlydog, on Flickr

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RobZilla

· #18 · Oct 16, 2019

Helmet type and brand is definitely a factor in wind noise. Going from a lower brand to a shoei rf-1200 was night and day for me. Idk how people ride for distances with the skull cap helmets and no ear protection without a lot of fatigue and a headache.

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Xsrbaron

· #19 · Oct 16, 2019

RobZilla said:
Helmet type and brand is definitely a factor in wind noise. Going from a lower brand to a shoei rf-1200 was night and day for me. Idk how people ride for distances with the skull cap helmets and no ear protection without a lot of fatigue and a headache.

Love the 1200; I went down in one hard enough to take a chunk out of it and never even had pain/headache, and bought another. Excellent helmet for a naked bike. Head checks at speed are a non issue and the noise level is negligible. If you look around, you can always find them on sale. I've never paid more than 400 for one.

RobZilla

· #20 · Oct 16, 2019

Right on! I got a Mark Marquez replica 1200 for under 400 about 1.5 years ago, cheaper than the flat colors at the time. I know the flat black ones are on sale now for under 300 which is a wicked deal if anyone is interested.

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