Re: Yamaha YZF-R15 version 2.0

thanks bro.. i gave it for bearing replacement today.. will get her back in two days..
by the way, i got the tappet adjustment done, mileage is back to 43

More Power on the R15 V2 please !!

Hi,
I've googled and researched a lot for hot rodding my stock R15 V2, finally I've decided to go with the following(for the time being):
1) Daytona Cam Shaft and ECU
2) K&N Stock Replacement Air Filter YA-1208
3) Leo Vince GP Corsa Carbon Fibre Exhaust

Now, the problem is getting the air-fuel ratio right (more or less), and I intend to do it with additional accessories rather than going on a dyno because I don't have access to one.

My queries:
1) Can anyone tell me if the above setup is good enough or if something even better is available/advisable?

2) With the above setup, how do I go about tuning it, like for example the AFR mixture and stuff so as to make the most out of the performance filter, Cam Shafts, Racing ECU and the free flow exhaust.

3) It was to my understanding that to get a good power output in a Fuel Injected Bike, I would need a good ECU that had rich fuel maps (I may be wrong), so is the Daytona racing ECU good enough if I use it along with a free-flow filter and a free-flow exhaust?

4) I stumbled onto something here in Xbhp that I would like to know more about, increasing the CO setting with the FID tool, will this result in a richer Fuel mixture and consequently more power?? I know lean mixtures heat up the engine, but what about using the above setup 1 2 & 3 and at the same time increasing the CO setting, what would happen?

I want a decent 2 or 3 bhp increase in power, with power in the mid-range and low-range, but I also want something that won't harm the engine in the long run.
Please help!!!

Re: Yamaha YZF-R15 version 2.0

You're welcome bro !! I'm happy that I have been able to help you through some possible causes of low FE. I hope that you've made the tappet clearance of .2mm or more.

Re: Yamaha YZF-R15 version 2.0

Guys does using a air filter have any significant improvement on the performance?
Is it true that the bike heats up more and there is decrease in the FE?

Re: Yamaha YZF-R15 version 2.0

Every bike has an Air-Filter

You might be asking about performance air-filters. There are no performance improvements, only change in sound.
For performance gains, you would have to use a free flow exhaust along with the performance air filter.

Re: Yamaha YZF-R15 version 2.0

Oops my bad!yes I was talking about performance filters ...thanks and what about the FE ?

Re: More Power on the R15 V2 please !!

Actually I myself am planning for something similar once my bike has put some more kms on it. Do keep me updated with your mods. I think the Daytona ECU should be good enough to provide the richer AFR required for the K&N filter and the exhaust. Are you going for a full exhaust system or a slip on?

Re: Yamaha YZF-R15 version 2.0

From what I have learned from the experts over here, installing only an air filter without any other mods/tuning, is pointless, an air-filter does increase performance only when you use it with a rightly mapped ECU, and a free flow exhaust.
It's only a part of the equation.
If you use only an air-filter, there will be more air entering the engine's cylinder head and it will mess up your air-fuel ratio (AFR), this is called a lean mixture (less fuel/more air), which ultimately results in the engine running hot and it will harm the engine in the long run.
You need a re-mapped ECU to adequately supply more fuel during combustion so that proper AFR is maintained, a free-flow exhaust improves engine breathing which is required if there's more air-fuel entering the combustion chamber than normal.
The only benefit of using only an air-filter is you get that roaring sound, ​sadly it kills your engine slowly.

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I will keep you updated, I'm going for a full exhaust system
(http://www.leovince.com/en/catalog-yamaha/impianto_completo_gp_corsa_racing_passaggio_standa rd_yzf_r_15_i_e_2009_2011/14919)

I'm new to hot-rodding, and even newer to Xbhp, so I had to digest a lot of information in a very short time, such as AFR, lean mixture etc., every time I find something new, I get even more confused.
There are a lot of people here in Xbhp who are really experts and know about the subject, but I'm having trouble getting the right info, like what to do? how to do? what not to do?
Perhaps you could help me

I found this item in amazon, it's a fuel controlling chip, that uses the R15's MAF sensor (mass air flow sensor) and also plugs into the ECU, it fools the ECU into thinking the intake air is cooler, so that the ECU sends more fuel, it's a bit expensive, I don't know if anyone here has used it, check the link, what do you make of this? Is it worth a try?
http://www.amazon.com/EVO-Tech-Performance-Controller-REMOTE-YZF-R15/dp/B00DKVIP5S/ref=sr_1_3?ie=UTF8&qid=1396930229&sr=8-3&keywords=evo+tech+chip+r15#productDetails

Re: Yamaha YZF-R15 version 2.0

I'm new to hot rodding. Based on what I have heard from people who have done it before, for R15, using air filters that are similar to the stock(not conical ones) and those that won't require you to do any mods to the airbox will not change the AFR by much, so you can use them even without a remapped ecu. But you may not get any performance increase, except maybe a tiny increase in the low end power. If you go for full exhaust system with performance filters, you will need a better ecu than the stock to meet the new AFR requirements. The daytona ecu should be good enough. You will get some noticeable performance increase, but it won't be much since this is a low capacity bike. If you put it on the dyno, you may notice only around 1-2 hp increase.

Re: Yamaha YZF-R15 version 2.0

Dyno Boost Performance Chip for R15: has anyone used this??

I found this product on Amazon, it's a fuel controlling chip that plugs in to the bike's MAF sensor and ECU, it has a knob to adjust fuel ratios from 12.7 to 14.7, this chip tricks the ECU into thinking the intake air pressure is lower, thus the ECU will send more fuel. Check out this link
Amazon.com: EVO-Tech Performance Chip Fuel Controller w/ REMOTE Yamaha YZF-R15 V2.0: Automotive

Any comments on this anyone? Is this worth a try?

Re: Yamaha YZF-R15 version 2.0

Hi Krishna,

Thanks for your reply. Yes, it depends on the way how rider handle the gear and clutch. Let me check in the service center.

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Re: Yamaha YZF-R15 version 2.0

Got my r15 two days ago. Its the 2014 racing blue. Have ridden about 150kms till now and i find the stability on the highways and cornering ability of the bike amazing. Though I hug the tank tight with my legs and keeping a straight back, my wrists and upper back pains a lot when theres a pillion with me. I hope i get used to this very soon (Also missing the low end torque of fz hence i don't feel like selling it off).

One more thing i noticed on the second day is that the rear number plate holder is not in line with the tyre. I noticed a few other r15 v2s too on the road with the same misaligned rear. I hope its only the number plate holder thats misaligned and its not a body vs chassis misalignment. Will get it checked at the svc. Will post pics pics of the issue too.




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Re: Yamaha YZF-R15 version 2.0

[MENTION=32450]tusilal[/MENTION] congratz on your bike. As regarding riding comfort with pillion, well let me tell you this. This bike was designed to be enjoyed the rider alone. You can take a pillion(if he/she is willing to endure the hardship ) but you will feel a lot uncomfortable with it, caz the pillion will be leaning on your back most of the time. I ride solo all the time and never take a pillion with me, I did it a few times before and I hated it. The bike will show its true colors only post 7k rpm, till then it will be almost a commuter. Do the break in properly and you will enjoy it a lot after that. As with the misalignment with the rear plates, I have seen it with many other r15s too, including mine. Not sure whether the ASC will be able to fix it.

Re: Yamaha YZF-R15 version 2.0

Usually its the Rear mudgaurd that gets misaligned because of hitting somewhere (In India,people love to hit the bike Standing in front in traffic ) Check if the mudgaurd is aligned properly with tyre.... If its not,just apply some force and it will get aligned. If the mudgaurd is properly aligned,then its the number plate holder.. You can bend that also with hand just by applying some force. Simple job

Re: More Power on the R15 V2 please !!

Check out with Race Concepts. They have the best setting which I have come across.