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The great fuel injected Roadie
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TOPIC: The great fuel injected Roadie
#677365
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Re:The great fuel injected Roadie 4 Years, 6 Months ago  
texasscott1 wrote:
During acceleration and, according to the FI manual, over about 15% throttle the O2 sensors are ignored. It could be that there was a bad connection but time will tell. Try a lot of steady cruise and see if it holds up.

Do you have a source for this manual? I'm looking at learning more about our FI systems so I can better tune it in the future
 
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Re:The great fuel injected Roadie 4 Years, 6 Months ago  
Thanks guys, I rode at a steady 60 last night as often as I could, it was doing great. It's still not really smooth at lower speeds, but these are very powerful V-Twins, and they like to GO!
The only thing I did different when I swapped O2 Sensors out, was to clean the connectors with some contact cleaner and a quick shot of WD-40 to displace any moisture. Then I blew them off with compressed air.

I will still change out the sensor with the new one when it arrives. I'm headed out in a few minutes, to ride all day. Thanks for hanging with me on this one.

We need a forum section dedicated to the FI models. With their abundance of sensors, and as pointed out in the first post of this thread, how long before we see senor failure?

For now -LET'S RIDE!!!

Blue Star posted a link to a manual, but I can only open it on one computer. Security settings too tight here. I need to just order one. I always do. I agree DK, we need to know how to fine tune these works of rolling art, to run their best.
It seems, since I bought this bike, all my extra money get's put into Gas!!
 
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#677462
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Re:The great fuel injected Roadie 4 Years, 6 Months ago  
It can be ordered through the dealer for 40 or 50 bucks. It won't help any with tuning though, that's best done with the service manual. How to set the CO% isn't in the manual either. That is usually taught in the GOLD class although the dealer can get a list of the procedure faxed from the RTA line.

The FI manual does list what I've said before about a leaner mixture resulting from increased airflow through the FI equipped engine. It also lists the different types of systems on the different bikes.

There's also a lot of info in the 2008 tech bulletin new model info. Your dealer should have this on hand.

The only "tuning" that can be done on the FI model is to make sure the idle CO% is the same for both cylinders. Folks will disagree with me I'm sure but from what I've seen the Road Star runs best in its stock configuration.
 
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Re:The great fuel injected Roadie 4 Years, 6 Months ago  
The HEGO (Heated Exhaust Gas Oxygen) sensor is generally good for 60,000+ miles although they usually go for a lot longer. Depends a lot on contaminants and so forth.
 
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#677832
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Re:The great fuel injected Roadie 4 Years, 6 Months ago  
What makes the Warrior so different than the plain Road Star? I understand you can tune those bike to suit your needs.

If the ECU is different, can we swap them out?

These are noob questions, sorry.
 
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Last Edit: 2013/08/25 08:36 By Gadgetman728.
 
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#677836
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Re:The great fuel injected Roadie 4 Years, 6 Months ago  
Gadgetman728 wrote:
What makes the Warrior so different than the plain Road Star? I understand you can tune those bike to suit your needs.

If the ECU is different, can we swap them out?

These are noob questions, sorry.
There are quite a few differences between the Warrior motor and the R* motor. For one thing, the Warrior uses dual throttle bodies instead of just one. I don't see any way that you could swap out the ECU.
 
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Re:The great fuel injected Roadie 4 Years, 6 Months ago  
Is there a complete - ECU replacement made, not just a piggy back unit? Although I agree these bikes run damn good without any modifications, that's one of the reasons for buying a bike, to modify it.
I find it hard to believe we are LOCKED OUT of ANY type of engine tuning.
 
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Re:The great fuel injected Roadie 4 Years, 6 Months ago  
Well, after 600 miles, the rear plugs were fouled again. The front ones were still clean. I guess I'll still replace the one O2 Sensor when it arrives. I'm guessing the next culprit would be the injector itself. I've been running SeaFoam regularly, but should I buy a fuel injector cleaner and run it? should I take off the back injector and clean it?
Should I just replace it?
 
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Last Edit: 2013/08/26 13:00 By Gadgetman728.
 
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#678393
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Re:The great fuel injected Roadie 4 Years, 6 Months ago  
Replace it probably although I don't know how much one is. Keep your fingers crossed that it's not something with the computer. Sure wouldn't hurt to have the dealer check the CO% to see if it needs to be adjusted. Hate to see you just keep throwing parts at it.

I'd try cleaning it before replacing it. Injector cleaner wouldn't hurt anything.
 
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Re:The great fuel injected Roadie 4 Years, 6 Months ago  
These are just opinions, so take it with a grain of salt.

As for as moding the fuel amounts, and so fourth, the piggyback fuel processors would free you up to do that. One of them allows you to keep the o2 sensors in the line, don't remember which one off hand.

From the numbers I've gotten with almost two years of running, as long as you don't change the size of the throttle body, the stock computer does a great job of adjusting to whatever pipes and intake you might put on there. Although I've only put the RA-066V filter, and run Samson drags. The RA-066V filter opens it just about all the way. The Samson drags opens that end pretty much too.

So the question is, if the stock computer does a good job, why would you want to change it?

With these FI bikes, when something goes wrong it might be best to take it to a qualified shop to get it diagnosed unless you have the tools and the knowledge to do it, because the old seat of the pants diagnostics is pretty much out the door.
 
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