You will hear such stories from people who want to sell you a full system. I have spoken to Daniel Falzon (currently second in ASBK) and his bike have just a link pipe and muffler. The headers (yes they are made of titanium) are an OEM item. According to his mechanic it is a complete waste of money to buy a full system. There is no real difference between well tuned cat eliminator system and full new exhaust. Give some credit to the people who designed that bike. They know what they are doing and a lot of that talk about "restrictions" is just a hogwash. Sure the bike needs a tune to get to its full potential but in terms of hardware it already have more than enough even for a seasoned racer.
Personally I am keeping the headers and the muffler (cut it shorter and it looks really good IMHO) and looking only for a decent link pipe. That will be plenty for me as I rather spend the money on adjustable rearsets.

 

Depends what you are doing. With the '09-'14 heat issues, you needed a full system to be able to add a race rad in front or an Addon rad

 

Thank you shifu now my question is what is a link pipe. Does the bike have to be remap with a slip on

 

The link pipe is that part of exhaust you put in place of your catalytic converter. It connects the headers with the muffler.
As far as re-mapping, the answer is yes, absolutely. Any changes to the induction system will affect your AFR so you will need to tune it. Check my reply to your post about the Flash Tune for more info.

 

I m running just the midpipe hooked to the Akro slip on with flashtune from SBK Unlimited. I see NO need to buy a full system, OEM headers are an AWESOME design from the factory..Use the extra money on something that will make you a better safer rider..The track or a school.

 

Completely agree :beerchug: If I may ask, where did you get the mid pipe from?

 

Ive said this before somewhere on here.....no need to replace a titanium Yamaha developed header.....imo

 

Yes you did that is why I state I read it somewhere here. Thank you all I started to look at yoshi then look at graves now I'm looking at akr. I'm going to try and get my ecu out and send it out. Will see how that goes.

 

Just look at twobros they have a nice slip on with a cat eliminator

 

How many of the BSB, FIM Superstock and World Endurance guys are using the standard headers...?

 

If it's gonna go that way then it's going to be an apples vs oranges discussion...

 

A few, but that is not the point. The point is that the standard header pipe is a compromise for a mass production bike. Probably a damn good compromise, but still not the best header pipe you can get if you are chasing the ultimate torque, horsepower or rideability. If it was the best, I am sure the professional race teams would know it and I am sure they would then be using it.

 

I'm pretty sure I saw some team with an aftermarket swingarm on the 15 a month or two after it was released. I'm sorry but I just don't believe they spent a bunch of hrs. not weeks or months, and developed a "better" swingarm than the engineers at yamaha with their race/GP trickle down tech. Yamaha likely spent months adding and subtracting rigidity while testing the setup with the bike, but some other engineers just went out and developed a "better" arm that works with the rest of the package? Have you seen the multitude of arms out there? Ever see spondons abortion for the 07-08R1?

I guess we need to just assume and have blind faith in the big budget teams that what they've bolted on is better than what yamaha can develope? I mean yamaha only makes the best handling motorcycle in the world....

 

I believe the gains are not that high in a full system for the new R1. Of course if we want the ultimate horse power we have to get a full system, but we are talking 1 or 2 horse power in the 2015 r1 case. Better of spend that money on track days and tires, or if seeking acceleration a -1 sprocket at front can do much more than a full system.

 

I'm not looking to do 300 mph I just want a good sound and get rid of the cat also not sure if I'm going to flash my ecu bc I haven't try to get it out yet and I'm not the best at taking things apart. My R1M is fast now and I haven't felt that dead spot people are talking about

 

The Akra kit headers are definitely superior to the stock headers. It just depends on how much you are willing to spend to get an incrementally better exhaust system.

 

The Akra kit headers are definitely superior to the stock headers. .

And you have a data that supports that conclusion? Otherwise is just another opinion.

 

I don't need data I have eyes and I know something about the laws of physics! The Akra headers have pipe diameter changes that the stock exhaust does not have. Probably too expensive to include on a stock system. Larger diameter equals slower flow speed. Requires more time and money to build the headers this way.

I doubt that Akra designed and built it that way to LOSE horsepower!

I am referring to the newly released Yamaha kit exhaust by Akrapovic.

Besides, it is my guess that Yamaha had Akrapovic design the stock exhaust. Guess only! Does anyone actually know whether Yamaha designed it or did they farm it out?

 

I don't need data I have eyes and I know something about the laws of physics! The Akra headers have pipe diameter changes that the stock exhaust does not have.

Whoa! We all have eyes and just happen to know something about the laws of physics too. Which law of physics do you know, and we don't, lets you categorically and definitely establish which header is better just by looking a it? The law of diameter changes? :bow

I wonder why engineers with fluid dynamics expertise spend months experimenting, testing and COLECTING DATA to build the best exhausts systems? They should just ask you to have a look and save millions. :shake

 

Don't be an ass. You brought up the need for data. I am just saying we are talking about two headers. One more sophisticated and expensive than the other from a well known exhaust provider.

I don't need to see data to know which is better.

 

I could agree that it's likely better, (I've owned multiple full akro systems) but I couldn't tell you if it's significant in the least....is a 34.2 gram weight loss worth $687.34 or a 1.2 HP GAIN only between 9250-1100rpm worth $467??

 

I'm going with the akrapovic Evolution Line exhaust

 

It ultimately depends on your intended use. If you're building a bike to race then you can find some power and weight in a full system over the stock setup. I'd be curious to know exactly how much titanium is required to advertise a "mainly titanium" exhaust system but this is not something a poor novice like me can go after so the stock headers will do for now.

 

Alatalo thanks for the information!

From my standpoint, if I am going to spend thousands of dollars on an exhaust system, I prefer to purchase a system that is being successfully used in superstock as opposed to WSB or any other set of tuning criteria. This is for the obvious reason that a superstock engine is closer to stock than any other race class and I do not intend to do any major engine tuning.

So I am looking at the Arrow system and the kit Akra system.

 

Most of the motoamerica guys are running Yoshi alpha or graves on their superstock 1000 r1s.

 

Blasphemer!!!...He's a witch burn him!!

 

I just order two bros slip on witch comes with a y pipe so the cat will be eliminated I'm keeping the stock headers will see what happens.

 

I'm returning my two bros went with Akrapovic full system

 

For what it's worth, I just had my bike tuned pretty much back to back with another '15. I had a 3/4 cheap slip-on, and the other bike had a full Graves Ti. Saw the printout for the other bike's run, and it was a wash at worst. Factoring tire weight difference, the tuner was pretty sure mine actually made better power.

Now, I'm not fool enough to think peak numbers are the whole story, as area under the curve is WAY more important, but the curves across the whole rev range were too similar to tell apart from a printout, so I was pretty happy. I came to two conclusions from the whole experience:

1.) The flash is WAY more important than the exhaust. I'd take a flashed stock bike with the EXUP wired open over an un-flashed bike with ANY exhaust system on it any day.
2.) I'd definitely buy a full system from one of the premium brands were I to want to hang an exhaust on my wall and admire it every day. For throwing down fast lap times, though, I'll keep the stock header, put on a cheap slip-on (or Y-pipe, as the OEM muffler looks good and is impressively light), and buy a set of slicks and a half dozen track days, with a bit of cash left over for lunch.

The OEM header is good kit, and its replacement is superfluous unless the engine internals are modified or you just really like the look of an aftermarket part. I've seen the proof.

 

Was the Graves system that you are referring to the racing exhaust (only available to race teams) or the regular system.

Fyi, the short Arrow system makes over 15 more HP than the stock system. A very definite improvement! And I am guessing that the kit Akra will be in the ballpark with the Arrow.