Bike India Q&A - R15 Aftermarket Airfilter - Page 2 - xBhp.com : The Global Indian Biking Community

Samarth 619 · 12-26-2008, 11:19 PM

I have Reported the Issue in BI Members' Orkut Community! Expecting a reply soon.

Otherwise, I haven't seen Amit & Bunny on this site, from a long time. Don't know why?

Killer · 12-26-2008, 11:23 PM

Quote:

Originally Posted by BANDHAV

P220 does have an air temprature sensor that alter the supply of the air according to the prevailing air temprature. That is the one reason that in recent Himalyan ride of Bunny, p220 was the only bike which managed to reach the highest point without any hiccups.

Yes the intake air temperature sensor is used to help the ecu calculate how much oxygen there is for a given quantity of air, hotter air has less oxygen than cool air. Again, i havent verified if the R15 uses one, i basically gave up when i realized there was no O2 sensor and AF had to be dialled in manually. Pacer yamaha have the handheld unit and know how to use it, i dont know about other dealerships.

Killer · 12-27-2008, 12:23 AM

Ok found this diagram from the yamaha india website, so that confirms the use of the manifold pressure sensor and intake temperature sensor i've mentioned above. In addition we have an 'engine' temperature' sensor used to determine if the engine is warming up or at operating temperature and a crank angle sensor, used to indicate engine rpm as well as to determine what stroke the engine is in and control the timing of fuel and spark accordingly.

So the ECU will run appropriate inbuilt maps for different weather conditions based on the inputs from the manifold pressure and intake air temperature sensors, however without the O2 sensor in the exhaust it would not be able to automatically manage the AF ratio in the event a K&N filter were installed.

http://www.yamaha-motor-india.com/pr...ture_r15_8.jpg

HydBiker · 12-27-2008, 12:35 AM

saw this diagram before I bought the bike but forgot all about it. Based on this I expected the R15 to have a full fledged FI system with all sensors in place... so, the one missing now is the Oxyzen sensor.

Well, Killer Dude, how'd we relate this to the problem Santoosh mentioned? He complained of this long back too... that his bike performs better in Chennai than in Bangalore???

Killer · 12-27-2008, 12:47 AM

Quote:

Originally Posted by HydBiker

Well, Killer Dude, how'd we relate this to the problem Santoosh mentioned? He complained of this long back too... that his bike performs better in Chennai than in Bangalore???

Bikes in Chennai will typically perform better coz at sea level they will be running slightly higher compression, therefore they will feel peppier and more lively under acceleration. In addtion if Santoosh's bike is running well in hot conditions it probably means he is running a lean mixture. In another post he indicated he has changed the AFR, that could be the reason.

archibaby · 12-27-2008, 01:00 AM

one more question .. now there is a screw to adjust the idling level and I have adjusted it too. So can we make the mixture richer by increasing the idle.

also are tuning boxes such as PC available for open loop FI systems ?

.:. Archi

santoosh · 12-27-2008, 04:20 AM

Killer,
thanks for the justified explanation.Yeah, im running lean for sure i think.Spark plug reads ok though .
Went to get the AFR Changed again and Things were different this time.
they plan to dyno it and set it right . Dint have the time for it plus , dint feel it was worth spendin so much on that.

Santa
________
Live sex

BANDHAV · 12-27-2008, 09:46 AM

Quote:

Originally Posted by Killer

at sea level they will be running slightly higher compression

Sir, can you eloberate this part, i failed to understand it.

DriftKingNT · 12-27-2008, 10:26 AM

@killer so what is to be done if we want the bike to perform better after installing K&N.

@those who asked to contact Bunny note that Bunny is offline since months.

SAGARR_46 · 12-28-2008, 10:47 AM

Hi Guys,
I was the one who posted this query to BikeIndia and I am super glad that just a day or two after I had emailed Bunny, I had a word with Killer and decided not to go ahead with the filter replacement. I guess this is a classic example why Xbhp is such a great resource because you can actually get your doubts clarified from people who truly have the knowledge and expertise in this field. A Big Thanks to Killer and Joel for sharing their knowledge with me.

12-26-2008, 11:19 PM	#11 (permalink)
Samarth 619 Pulsar Culture. Join Date: Sep 2008 Location: Rajasthan Posts: 2,445	I have Reported the Issue in BI Members' Orkut Community! Expecting a reply soon. Otherwise, I haven't seen Amit & Bunny on this site, from a long time. Don't know why? Last edited by Samarth 619; 12-26-2008 at 11:36 PM.

12-27-2008, 12:23 AM	#13 (permalink)
Killer The old guy Join Date: Apr 2003 Location: Bangalore, India. Posts: 427	Ok found this diagram from the yamaha india website, so that confirms the use of the manifold pressure sensor and intake temperature sensor i've mentioned above. In addition we have an 'engine' temperature' sensor used to determine if the engine is warming up or at operating temperature and a crank angle sensor, used to indicate engine rpm as well as to determine what stroke the engine is in and control the timing of fuel and spark accordingly. So the ECU will run appropriate inbuilt maps for different weather conditions based on the inputs from the manifold pressure and intake air temperature sensors, however without the O2 sensor in the exhaust it would not be able to automatically manage the AF ratio in the event a K&N filter were installed. http://www.yamaha-motor-india.com/pr...ture_r15_8.jpg __________________ *killerdude.web.officelive.com* http://www.facebook.com/sameer.venugopalan www.youtube.com/killer Last edited by Killer; 12-27-2008 at 12:31 AM.

12-27-2008, 12:35 AM	#14 (permalink)
HydBiker Senior Member Join Date: Sep 2008 Location: Hyderabad Posts: 3,205	saw this diagram before I bought the bike but forgot all about it. Based on this I expected the R15 to have a full fledged FI system with all sensors in place... so, the one missing now is the Oxyzen sensor. Well, Killer Dude, how'd we relate this to the problem Santoosh mentioned? He complained of this long back too... that his bike performs better in Chennai than in Bangalore??? __________________ Jawahar Navodaya Vidyalaya Alumni? PM me for an Invitation to *myJNV - the navodayan connect!*

12-27-2008, 01:00 AM	#16 (permalink)
archibaby Carbon Fiber Tendons Join Date: Sep 2008 Location: lore of the banga Posts: 588	one more question .. now there is a screw to adjust the idling level and I have adjusted it too. So can we make the mixture richer by increasing the idle. also are tuning boxes such as PC available for open loop FI systems ? .:. Archi __________________ hey !!! who drew the line above ?

12-27-2008, 04:20 AM	#17 (permalink)
santoosh toure- r15 Join Date: Jun 2004 Location: Bangalore Posts: 978	Killer, thanks for the justified explanation.Yeah, im running lean for sure i think.Spark plug reads ok though . Went to get the AFR Changed again and Things were different this time. they plan to dyno it and set it right . Dint have the time for it plus , dint feel it was worth spendin so much on that. Santa ________ Live sex Last edited by santoosh; 08-25-2011 at 06:15 AM.

12-27-2008, 10:26 AM	#19 (permalink)
DriftKingNT YAMARIDER Join Date: Sep 2008 Location: Aurangabad Posts: 401	@killer so what is to be done if we want the bike to perform better after installing K&N. @those who asked to contact Bunny note that Bunny is offline since months. __________________ Yamaha YZF-R15 is Here

12-28-2008, 10:47 AM	#20 (permalink)
SAGARR_46 150kmph... Been There, Done That!! Join Date: Nov 2008 Location: Pune Posts: 476	Hi Guys, I was the one who posted this query to BikeIndia and I am super glad that just a day or two after I had emailed Bunny, I had a word with Killer and decided not to go ahead with the filter replacement. I guess this is a classic example why Xbhp is such a great resource because you can actually get your doubts clarified from people who truly have the knowledge and expertise in this field. A Big Thanks to Killer and Joel for sharing their knowledge with me. __________________ Watch my Baby R1 clock 148kmph at http://in.youtube.com/watch?v=cAHbYl...e=channel_page.

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