ECU getting into the factory ecu to change air fuel ratio??? CO mode. - Page 14 - Yamaha Star Stryker Motorcycle Forum
Reply
 
LinkBack Thread Tools
Old 08-03-2016, 05:11 PM   #131 (permalink)
Full Member
 
Join Date: Feb 2016
Location: Querétaro, México
Posts: 73
Garage
Default

Hi everybody! First of all, yes, I know about Ivan's flash and I already contacted him. It is possible to flash my Mexican distributed ECU, but I still haven't found the guts to send the ECU on that long way adventure (and spend maybe weeks without my beloved, daily used bike)

So, I've a kind of long question: I have a cobra Fi2000 open loop fuel mng. (cobra slip on + air system) I didn't bought the close loop because of the cost and I chose not to spend a lot to see if this managers really works (I was a little skeptical). Now, I definitely feel a difference when changing the settings, but not happy at all.

The open loop manager ask for the O2 sensor to be disconnected. I understand that if it is not, it overrides the settings on the Fi (just guessing). I also understand that the cobra Fi close loop actually have no use for the first pot, as it set the idle/cruise mix using the O2 sensor. I have no idea how the second and third pots uses this sensor, or if they use it at all.

Now, the question: I like the idea of having the idle/cruising mix adjusted by the O2 sensor as, I guess, it will give me the best fuel consumption (I'm getting 28 mpg on the city. Well, my bad driving habits doesn't help a lot, but, anyway I feel it's too low), so I was wondering: If I change the ECU mix (CO) and connect again the O2 sensor, I will override the cobra first pot setting (cruise, idle) with the ECU parameters (I'm guessing again), but, does anybody have an idea of what will happen at higher RPM's, or with the throttle at above that 15-18% the CO modify? Will the cobra still affect the mix or is it bypassed at all by the O2 sensor readings?

I know is a little hard question, considering that maybe the Fi is a black box, but maybe somebody had figured it out... Thanks in advance!
__________________
---------
TWBB Free Bikers, No Rules

Last edited by acorrales; 08-03-2016 at 05:27 PM.
acorrales is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 08-03-2016, 09:16 PM   #132 (permalink)
Hero Member
 
Join Date: Jul 2013
Posts: 906
Default

It won't change anything higher rpm but might not do terribly much for you at all in lower. My belief is the cO modification acts as a multiplier outside the ECU's set parameters. How it conflicts with the cobra I have no idea but if you're saying that isn't doing anything on the first pot anyway with the O2 sensor then it's probably not going to do much.

All said, it is free and one wire to ground so you have nothing to lose by trying.

When you do it just check your plugs every couple of thousand miles and make sure you aren't fouling them up from being too rich.

Last edited by gerdawg; 08-04-2016 at 08:46 AM. Reason: Edited on computer...replied on phone last night.
gerdawg is offline   Reply With Quote Quick reply to this message
Old 08-04-2016, 09:15 AM   #133 (permalink)
Full Member
 
Join Date: Feb 2016
Location: Querétaro, México
Posts: 73
Garage
Default

Quote:
Originally Posted by gerdawg View Post
When you do it just check your plugs every couple of thousand miles and make sure you aren't fouling them up from being too rich.
Yeah... I need to this a habit. Just curious: Is there any other adjustment that can be performed in the CO mode, or relevant information displayed? I like the idea of ground it "permanently", but if the only use is to adjust the mix...
__________________
---------
TWBB Free Bikers, No Rules
acorrales is offline   Reply With Quote Quick reply to this message
 
Old 08-04-2016, 10:53 AM   #134 (permalink)
Hero Member
 
Join Date: Jul 2013
Posts: 906
Default

No the adjustment is just for the cO. Doesn't open up anything else.
gerdawg is offline   Reply With Quote Quick reply to this message
Old 08-04-2016, 10:55 AM   #135 (permalink)
Full Member
 
Join Date: Feb 2016
Location: Querétaro, México
Posts: 73
Garage
Default

Quote:
Originally Posted by gerdawg View Post
No the adjustment is just for the cO. Doesn't open up anything else.
Ok. Then the needle will be. Thanks!
__________________
---------
TWBB Free Bikers, No Rules
acorrales is offline   Reply With Quote Quick reply to this message
Old 08-04-2016, 11:00 AM   #136 (permalink)
Hero Member
 
Join Date: Jul 2013
Posts: 906
Default

I prefer grounding it because I change the cO depending on weather. Also it takes a little bit of riding and adjustments to dial it in.
gerdawg is offline   Reply With Quote Quick reply to this message
Old 08-04-2016, 11:14 AM   #137 (permalink)
Full Member
 
Join Date: Feb 2016
Location: Querétaro, México
Posts: 73
Garage
Default

Hummm, that's a good point: find the sweet spot for the riding conditions. The Cobra allow me to adjust the mix on the fly, but mixing it with co... I guess I'll use a T-tap while doing tests, and (if needed) remove it when done. I'm guessing that, if this bike is like the Suzukis, claiming a warranty will never be an issue.
__________________
---------
TWBB Free Bikers, No Rules
acorrales is offline   Reply With Quote Quick reply to this message
Old 08-04-2016, 11:45 AM   #138 (permalink)
Hero Member
 
Join Date: Jul 2013
Posts: 906
Default

I pulled the lean angle plug and spliced the wire in there to ground. The other side of the 3rd pin goes no where on the angle sensor. I already asked my Yamaha dealer and they said it wouldn't affect warranty but I can reverse it without anyone having a clue if I needed to since i'm not cutting into the ECU harness at all. Took all of about 30 minutes to do the job.

IMO pull the battery, find the lean angle sensor (I think slick posted directions) and ground it to the bike. If you ever had a problem it won't be sore thumb sticking out like it is if you did it right at the ECU harness.

In the first couple of posts I attached a diagram of the lean angle sensor wiring diagram and the color wire to use. If you need pictures I had a whole write up on the way but slick beat me to it. I can send them over just let me know.
gerdawg is offline   Reply With Quote Quick reply to this message
Old 08-04-2016, 11:54 AM   #139 (permalink)
Full Member
 
Join Date: Feb 2016
Location: Querétaro, México
Posts: 73
Garage
Default

Thanks! I saw the post in post 8 from slick: its very clear. If there is not a problem with warranty, then I guess I can spend 30 minutes and a couple of beers taking off the battery.

Just one last request: do you have a close up picture and some dimensions of the lean angle plug? I need to buy the jack before taking out the battery, as I have no other vehicle to go shopping while working on the stryker.
__________________
---------
TWBB Free Bikers, No Rules
acorrales is offline   Reply With Quote Quick reply to this message
Old 08-04-2016, 12:34 PM   #140 (permalink)
Hero Member
 
Join Date: Jul 2013
Posts: 906
Default

No need for a jack. This was all done with the bike on the side stand. Here's the location of the lean angle sensor.

Last edited by gerdawg; 04-02-2017 at 10:09 PM.
gerdawg is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Yamaha Star Stryker Motorcycle Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
ECU flash - Need a volunteer Ivan Technical Discussion 1073 10-25-2018 09:05 PM
ECU flash vs. Fuel Monitor Gish My Questions 98 12-31-2015 01:22 AM
Re-flash ECU Hack My Questions 13 03-22-2015 09:02 AM
ECU Flash first? guitargeek76 Mods and Accessories 13 01-21-2015 09:13 PM
ECU Flashed Melvinrdm My Questions 11 01-06-2015 10:17 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -4. The time now is 02:18 PM.



Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL3
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Motorcycle News, Videos and Reviews
Honda Grom Forum strong>Kawasaki Z125 Forum Harley Davidson Forum Honda 600RR Forum Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Honda Africa Twin Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum Ducati 959 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Victory Charger Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum
BMW Scrambler Forum Ducati Scrambler Forum Kawasaki Ninja 250SL Forum
YamahaStarStryker.com is an independent Yamaha enthusiast website. Content on YamahaStarStryker.com is generated by its users and YamahaStarStryker.com is not in any way affiliated with Yamaha Motor Corporation, U.S.A.