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Discussion Starter · #1 ·
First of all here's the air intake, restricted. This guy (circled red) is gone.





Secondly, this air intake is small for noise reasons.



Took a dremel tool to it to open it up



This is all the crap that was removed



DynoJet PCV installed



Graves 3/4 cat-elimm installed





Heading to the dyno tomorrow...will post up #s and maybe video..
 

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Discussion Starter · #5 ·
Dyno'd

ok so she dyno'd at 153hp, this number is probably low because this dyno machine is known for low #'s for some reason. No I didn't do a pre-mod dyno, sorry.



hear is a cell phone video (sorry) just after the pipe was installed:


and here is another (short) cell phone video during the dyno:


the quite muffler plug that came in the pipe was removed.
If anyone wants a better sound recording than my cell phone let me know and I'll get out my mic & camcorder.
 

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So, you removed the rubber inlet from the airbox, removed and blocked off the AIS system, removed the oxygen sensors, replaced the cat and exhaust with a Graves system and tuned with a dynojet?
Does that cover it?
 

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Discussion Starter · #7 ·
So, you removed the rubber inlet from the airbox, removed and blocked off the AIS system, removed the oxygen sensors, replaced the cat and exhaust with a Graves system and tuned with a dynojet?
Does that cover it?
yeah pretty much, + the Flashtune and bumping the rev limiter from stock (11,800 I think) to 12,250 now. Also did some throttle mapping and took out some of the harsh engine braking under decel. Oh and the engine check light is on now so we have to take care of that as well.
 

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which exhaust did you order?
The Graves EVR system.
They are just coming out with it, it comes with a titanium Exup valve and map for it, they claim its an excellent exhaust.


What Chuck Graves the president of Graves Motorsports has to say about the release of Graves’s newest line of exhaust systems, EVR and the technology behind it.


“The EVR or Exhaust Valve Type R is and electronically controlled valve that improves drivability at small throttle and low RPM ranges where it matters most to the rider. The systems can also be utilized to reduce sound by a significant amount without reducing maximum power output.”

What makes the Graves EVR different than the stock exhaust valves that racers commonly remove when the stock system is replaced with an aftermarket race system?

That’s pretty simple, we install it in a race system and tune the electronics to maximize efficiency. The current trend of sport bike enthusiasts has been attracted to short silencers simply for looks. Power output and drivability has been sacrificed exclusively for the trendy look. Secondly the sound levels of many of these systems has reached the level of irresponsible and annoying for even the youngest riders. The aftermarket has responded with sound inserts to bring these short power robbing systems to an acceptable level. The real drawback to this is that once the sound inserts are installed the rider can now really feels the negative effect of the system in overall performance decline substantially. In most cases, I’d say 99.9% of all motorcycles that I have tested, the power output and throttle response is now far worse than the stock exhaust. With the EVR by Graves we solve all 3 issues, the power output, throttle response and the sound.

Who else uses this system on their race pipes?

Only Factory Moto GP teams are using it at the moment. Most of them all are well hidden!
Why hasn’t this been done by the aftermarket before? Again that’s pretty simple. Cost! To drive the valve requires hardware and software. At minimum you need an ECU capable and a motor. The emergence of ECU flashing has given us the ability to do this at a reduced cost because we can now control the stock ECU motor controls. We have designed our EVR systems to accept the stock motor and cables. This makes for a really clean setup.

So is the FTECU flashing system is required to optimize the EVR exhaust system?

That is correct. Anytime you replace the stock exhaust system with an aftermarket racing system it requires changing the fueling. In addition to air fuel requirements the modern motorcycle engine control systems cannot be optimized by piggyback system so the flashing of the ECU is common place. Graves has partnered with FTECU to manage these strategies to enhance our exhausts systems performance just as a Moto GP team would do.

What if I already have a flashed ECU?

What Graves has been telling our customers is that they should purchase the FTECU flashing kit when they purchase an exhaust from Graves. Graves provides maps for the user to install in their motorcycles ECU. We tell them that by having the FTECU flashing system in their tool box they can update their ECU whenever Graves publishes a new map. If they have the system already then an updated map is all that they will need.

For which motorcycles is EVR currently available?

We are developing every day to add more models to our list, but as of printing, we offer EVR for the following:
2015 – 2017 Yamaha YZF R1 2016 – 2017 Yamaha MT/FZ10 2017 Yamaha YZF R6
 

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Nice mods. Curious about opening the bottom of the airbox though. Theoretically should increase airflow which may make a difference.

Are you still using stock air filter or did you go with aftermarket (and if so, what?)
 

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Discussion Starter · #13 ·
is your graves a SO or full? don't change the OEM air filter to any aftermarket as you'll lose noticeable power (no K&N).[/FONT]
Neither, it's a 3/4 cat eliminator.
I stuck with the OEM air filter, but did you notice how I made the opening to the airbox larger for greater air intake (in my OP)?
 

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Very good brother racer172. Loud! Nice, can' get enough dBs to wake up the neighborhood.

IMHO, there's no such thing as "less is more", "a point of diminishing returns" or "bigger ain't better", BS!

As for the enlarged intake, yes my friend, I notice everything up to and including everything. :nerd:

When your done and find some free play time, shoot us some audio dahtah . . .

Aren't we always looking for that preverbal lone hair to split, especially with our beloved '10'.

Good luck man.
 

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Also (just remembered) a suggestion if you're looking for maximum power, don't change the OEM air filter to any aftermarket as you'll lose noticeable power (no K&N).[/QUOTE]

Just noticed this thread and the comment above. I swapped my stock filter for a K&N like I did on my 07 Gixxer. However, I have noticed on the MT10 that it now runs like a dog from 2-5,000 rpm. Do you think it is related? Also, I bought the race filter by mistake.
 

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Discussion Starter · #16 ·
I swapped my stock filter for a K&N like I did on my 07 Gixxer. However, I have noticed on the MT10 that it now runs like a dog from 2-5,000 rpm. Do you think it is related? Also, I bought the race filter by mistake.


I'm the OP on this thread. You've allowed more air without tuning the bike. Race filter is not practical or needed on this bike. With a race filter you should be cleaning your filter more often and the air box on this bike is kind of a pain to get to. And getting back to the topic of which air filter to use I'll just mention that doesn't make as much difference as opening up the air-intake box like I did (see my pics in post #1). Anyway you should tune your bike if you increase the air flow.
 
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