What we have learned re the firmware versions and the GS911 logging indicate that there are very significant differences between the early and last firmware versions. It is important to move up to the 8543015 ECE or 8543016 US firmware versions they are chalk and cheese, without the upgrade it is clear it a hiding to nothing
There are two separate issues. Does a boosterplug add fuel after a few tanks of gas? Are riders happier with a boosterplug installed, than without it? The answers are: If you have a connected lambda sensor and if you measure the bike's AFR, it's easy to see that a boosterplug doesn't add fuel for more than a couple tanks of fuel--that's been proven. When you ask riders if they're happier with it installed, some will answer yes--that's been proven too.
Hi Roger, a question or two if I may. How would the lambda sensor and the ECU react to doing the following. Constantly changing the grade of fuel, purchasing the fuel from different companies, 1 tank in 12 with octane booster, + the seasonal density change? If you regularly do this, what happens to the bikes AFR? Givin that the 02 sensor is sniffing different values. I might be barking up the wrong tree! But if the booster plug gets negated out of the equation then what happened to my chronic stalling issue? As always Any insight will be appreciated
A few examples of the booster not working anymore does not disprove that they work. I am nearing 45k miles on mine, and it is very obvious when the booster is removed. Ran more than one tank through it also, I've tried this multiple times. Keep hearing this broken record that it does not work, that is false. Maybe it works just enough on some bikes to eliminate the stalling issue. Be nice if we could acting like this is a "proven" result. Seems like it works for more people than not. Stalling in front of traffic is not something you can deceive yourself over. It solves my stalls period.
Hi Paul, The O2 sensor is more properly a lambda sensor. That means that the Ecu can use it to hold lambda = 1 no matter what the fuel type. For example, pure gas at lambda=1 runs an afr of 14.7:1 but add 10% ethanol and the Ecu adapts it to 14.1:1, a higher percentage of fuel but the same lambda value. In some ways the lambda sensor is like a thermostat, it doesn't care if you burn wood, coal or oil it still governs the "temperature" to lambda=1. As for why a BP solved your chronic stall, I don't know. (I have one too. I purchased my first BP four years ago but don't use it any longer.) I do know that the reason your stall improved isn't because the mixture got richer. That can be measured and doesn't happen. There are dozens of correction tables inside the Terra ECU. Maybe there is a table that affects timing as a function of air temperature, and perhaps it improves idle at the expense of total HP. If something like that is the case, the manufacturer should explain it. What we do know by measurement and testing is that richer mixtures do improve driveability and torque, at the expense of a small amount of fuel. This is well known and can be measured.
I had my TR OSS'd some 600klm ago, strangely now it takes the second start for the engine to fire & it a stalls at the first corner when I change down from 1st to 2nd
That could be just a winter thing and/or a tired battery. My bike takes an extra crank but this is the batteries third winter!....... Did you disconnect your D boost device when you had it OSS'd?
I'd fitted the D-Boost in such a way that it was simple to disconnect - the bike had not shown any negative symptoms up until the OSS It was nearly as cold as I rode down, as the following morning on my ride back to Sydney It needs two goes as the starter button, & only stalls the once, starts immediately, whilst still moving - very strange There is some slight surging at low constant load, the throttle action is on/off at very small openings with popping on the over-run, would indicate some leanness, pulls strongly above 3,000 rpm without pinging (which was pronounced with the AF-XIED - although that did prove to be a defective unit) It is possible with the single can GPR exhaust that there is some "revision"? I'll see how things go over the next few thousand klms
The GS911 logging reveals the firmware moves from open loop to closed loop operation at 42 degrees C where the earlier model 650GS firmware moved at 62c, this is in line with other vehicles manufactured to meet EU5 emissions so let the beast warm up a little more before starting off when the engine is cold The logging also shows the idle actuator is in play at low rpm above idle where earlier 650GS model firmware only used idle actuator at 0 throttle opening I have a call out to see if there is a Sertao owner in Sydney I can do some logging of to confirm their BMS-E is operating in the same manner
Ditto here after I had my Strada attended to. Used to start instantly before. Post update, it takes a couple of cranks of the engine to start when cold. It may be due to a tired battery but as the start up procedure seems to be the same on every cold start, I suspect it's the ECU update. Mine also wants to stall at the end of the street when I change down. In my case I find 1st too high and 2nd too low unless the engine has reached operating temperature. I'll order a slightly bigger rear sprocket when it's time to replace. I have Iridium plugs and AF-XIED set on 7. Unmodified airbox with Unfilter.
Sounds exactly like mine with latest ECU revision and all resets done.....the random stall has morphed into a cold stutter/stall (you get some warning which is better). Do the bigger injector and or the Pulstar plugs, you wont regret it! http://www.cafehusky.com/threads/random-stall-–-a-silver-bullett-or-as-close-as-we-may-get-tr650-husky.80593/
Wayne, I don't know if this is the case for Huskys but many newer bikes show a variation of Closed Loop entry based on Oil and Air temperatures. For example, the newer R1200 BMW models go into Closed Loop seemingly as soon as the O2 sensor is responsive.
On the 650's you will find the coolant temp is used as there is no oil temp sensor and that when the machine is warming up from cold that closed loop starting is determined by engine temp. If the ECU went into closed loop as soon as the 02 was responsive then that could negate any cold start process in the ECU
Hello Mark! I am a Swedish seaman and I live in Donsol Sorsogon. I bought one Husqvarna terra 650 and I have had it for little over a year with plenty plenty problems with misfire, backfire and it stops in the middle of nowhere many many times and it drives me insane!!! I just want to ask you how's your Husqvarna before I take it to court to get my money back cause I had it with that shit after they tried to fix it for me three times and the last time they didn't even let me testrun it unless I paid for the five months i refused to pay before it runs like clockwork!!! Please reply if you have time!!! Thanks a lot!! Regards Ted Litens
That's right, it would negate any warm-up enrichment, and that's just what the newer R1200s do ... they run closed loop in less than a minute, with temperatures in the 50F range. Surprising but they want low pollution, ASAP. A cold start GS-911 log run on a 650 would be interesting to see how quickly CL comes on-line. I will look at one of TRZ_Charlie's LC-2 logs.
Hi Ted I'm an Australian Marine Engineer, I'm endeavouring to get my TR running well, many TR & Strada owners suffered similar challenges, in Australia getting Dealers to acknowledge or accept warranty responsibility would cost more $s than recovery A very few such as Dahlitz (in Canberra) do whatever they can to support us
I think WayneC measured mine at 52degC, which sorta explains the early stall at the first road junction I'm reluctant to let the motor idle until warm, 1/ it's generally considered bad practice (washing oil off cylinders) 2/ thinking of my neighbors
