#11 yamaha fjr1300a ecu flash full

At +20 & over you will be pumping soot out the exhaust if you can get it started before it floods out.Īir/fuel philosophy: Fuel mixture should be adjusted to acheive maximum power at full throttle without leaning out the mixture to the point that detonation occurs. Even your ignition coils have less time to build spark. OF course the pulse time of the injector will have less effect as engine rpm increases everything is happening faster. The FJR ECU carries a different part number than the Warrior ECU so are they still the same? It's easy to say 'Well, the folks that do the dyno tuning must know what's best because it's their job and they've been doing it so long.' You'll get almost no argument from anybody. When you're thinking about these questions keep in mind that there was a time when everybody KNEW the world was flat. Has anybody thought that the sacred flatline 13:1 throughout the entire RPM range might not be a good thing? Why might you want to run leaner at certain RPM? Why might you want to run richer? While we're on the subject of A/F ratios and such, here's another question for everybody. If something bad was going to happen to the engine because of fuel mixture, it would have happened over the last 20,000 miles and it would likely have shown up as damage to the plugs. I run my bike hard almost every single time I get on it. I just wanted to set the record straight before people run off in a panic to buy a PCIII they don't need just because somebody said the ECU adjustment doesn't do much. I just don't think it's necessary without doing cams, headwork, or increasing the displacement.

#11 yamaha fjr1300a ecu flash mods

I'm convinced that a Warrior engine can have enough mods to surpass the capabilities of the Stock ECU.

It's just a dumb map with adjustments for air pressure and temp feedback. I don't see how the ECU could know if the bike was running lean, rich or whatever. Some of the sensors have been tampered w0ith. I don't think the ECU will allow that to happen unless So paranoid that the fine folks on this site have probably spent tens of thousands of dollars on unnecessary PCIIIs and Dyno maps. I think a lot of guys are more or less paranoid about running lean. That's why I did my plug chops on an almost deserted road out in the country where I could hit the kill switch at any RPM I wanted. Moditit2yhmax, just for the record, the plugs will only tell you what is going on in the engine immediately before it was shut down- not what went on 30 minutes before.Ĭorrect. Here's another question, who stands to gain most by you having the 'perfect' A/F ratio, you or DynoJet? Here's another question, is the perfect A/F ratio a myth in all but the most sensitive of racing engines? Here's a good question, what A/F ratio causes a lean looking plug and what A/F ratio causes a rich looking plug? I've kept up with bikes with similar mods except they had a PCIII and I don't. There is no evidence on the plugs of any sort of mechanical problem, detonation, overheating, etc. The rear cylinder is a little richer than the front (just the way I wanted it). Almost 20,000 miles later the plugs still look good. Yep, everybody warned me not to eat those mushrooms before I tuned my bike and I just wouldn't listen.įor the record, my fuel graph with a Barons BAK and BigShots backs up my findings when I did my plug chops as I was tuning my ECU. Really makes you wonder about some of the guys that adjusted there ECU until they got the 'correct' color on there spark plugs. Each cylinder is adjusted individually to provide optimum mixture for each cylinder at low rpm.' At high loads, it becomes a much smaller percentage, so while it does still have a slight effect at full throttle operation, that effect is minimal. At idle, this is a significant percentage of the total duration. Quote:'The on-board adjustment adds or subtracts a set time from the base injector duration (how long the injectors stay open during intake).

#11 yamaha fjr1300a ecu flash how to

Now why didn't they print them in ours? There are also instructions on how to adjust the settings with a CO/HC tester on pages 3-23 through 3-28, with and without AIS blockoff.

They are exactly the same as the ones we use for our Warriors.

#11 yamaha fjr1300a ecu flash manual

What the f**k! Yamaha have instructions in the service manual on how to adjust the ECU CO settings on their FJR1300. I was reading my friends service manual for his FJR1300 and reached page 1-33. This is a lot of reading but I hope you'll find it interesting.