My Terra has a suspect stuffed head gasket. Getting pulled apart in a few weeks. They tell me the Warranty maybe a little bit hard for me to keep on this one because of the pod mod. Wait and see what they find, I hope it's an obvious assembly or part fault or I'm screwed. Might even explain my slightly mixed results with the AF-XIED.
That's a long bow to draw - pod mod and head gasket? Good luck, Quirky. BTW I will be tracking your way, Canberra to Port Macquarie the hard way (2 days), a quick run to Sydney via Taree, then home via whatever! setting 6 on the AFX-ied.
I don't believe it either. Horse shit I reckon. They tell me Increasing airflow via pod mod somehow creates a ram flow effect=leaner AFR=pre detonation=damaged head gasket. BTW I have used the AF-XIED since pod modding, this used lots of fuel and didn't reduce pinging even on the greater than 6 settings. So I hope both problems are related. I believe this problem goes back before the mods. I recall the pinging early on from new. Pre mods I recall not being able to maintain pace with a slightly tired transalp up a long straight climb because of the pinging. Bike has never over heated. I had trouble burping the bubbles out from the radiator first day home. Have a great ride Slowflyer! TTT rally and the TK bridge to bridge so I now may have to be riding the tyre shredding 1200. ")
Pisser! I would be livid if a dealer told me that. These bikes run so lean that long-term engine issues are inevitable. I'm not sure what grade fuel they have in your corner of the world, but I alway use premium in my bikes (93 octane R+M/2). I would imagine less grades would run like hammered rat $hit... I was telling my brother yesterday that when I took my O2 sensor out for the EJK install the anti-seize on the threads was ASH. Totally scorched. I've always used anti-seize on spark plugs/glowplugs/exhaust bolts/turbo wastegate hinges and I've NEVER seen it burn up like this. sorry /rant off. I hope you get you bike sorted soon
On Thursday I had my Terra Mossed to ensure the TPS was properly set and they downloaded a 'new' map as well. On Sat we set off on our ride where I travelled 1822 kms, half of which was in the company of two other Terras. My BMW F800 AFX-ied was set on 6 for the entire time. The riding was varied, everything from freeway, to high speed country twisties, to rough forestry tracks and even some bush-bashing. I still have a minor issue when the bike is cold - it can stumble when I close the throttle then open it quickly.That happened once this morning on the way to work with the IAT indicating 0 degrees Celsius at start then dropping to -1.5 degrees Celsius when it started sucking air. (Mind you, I was sucking my teeth! )The good news is that it hasn't stalled since the AFX-ied has been fitted and 100 kms were put under its belt. The bike is much happier lower in the rev range and pulls much better even below 3000 rpm. The afterfire popping has almost disappeared as well. The fuel consumption tells me that it is running richer. Before the Moss/Afx-ied (damn shame that happened together as I can't separate the cause and effect) I was getting a long term average of 4.35 ltrs/100 kms (54mp USg) whereas on this trip I averaged 4.96 ltr/100 kms (47.7 mp USg). That is a significant increase in my mind. I should add that because the riding varied so much the fuel consumption varied between 4.55 to 5.33 ltr/100 kms (51.9 to 44.3 mp USg). An interesting aside is that after one long, fast, twisty bitumen run of 298.4 kms (183.5 m) I put 15.68 ltrs (4.19 US g) in my tank. So much for it being a 14 ltr tank! My friends put over 14 ltrs in their tanks with a nice split between my usage being the highest, the Terra with the 15 tooth front sprocket next highest and the standard Terra using the least fuel. When my mates get back from their trip to the tip of Cape York (), we will commence a more structured trial to see whether the benefits of the AFX-ied are all in my head. At this stage, I am convince the AFX-ied is helping and I might give it a run on setting 7. M
Setting 7 is 6% richer. I average about 50-52 MPG depending on wrist position... Overall I am very happy with the AF-XIED. I leave on the 18th of this month for a multi-week trek up and back down the Mississippi River. A lot of forest trail, secondary roads, state highways and gravel. I will be keeping a daily log of fuel consumption on the trip. I will do the northbound leg on F7 and the southbound leg on F6 (2%). I plan to comment on this when I return. It will also end the beta test for me.
Hi Charlie. Regards, from EJK thread discussion. From memory the voltages that you checked were regarding either or both these options heating element and or temperature signal and not actually the AFR sender pair (essentially very basic system that only really swaps from a rich or a lean signal, think of a light switch it's either on or off ) this is why it is known as a narrow band sensor. I believe the same sensor is in the BMW's. The voltage stuff you were trying to find I think one of the ADV rider AF-xied threads. I'm not 100% on my understanding on all this at all and hope it makes a little sense. Cheers, Q
For you Charlie. This page and further back a few pages, is that what your looking for? Roger didn't explain it that well. Further proding may be needed. http://www.advrider.com/forums/showthread.php?t=749080&page=73 Good luck with the LC-2 Charlie, will be very interesting. I actually put one in a shopping basket earlier this week but didn't follow through with it. Cheers, Q
Thanks Q, Yeah, it'll be three weeks or so before I install it but I have one ordered that should be here when I get back. The LC2 logging should show us a great deal more that we know now.
I just returned from the Mississippi MRT trip. My AF-XIED did well with a few hiccups. Our average daily temperature was 91* and the average humidity for our time on the road was 89%. Mornings were generally around 72* with 85% humidity. We did have two mornings when it was 87* & 89* with 92% humidity on both days were the bike hunted for idle and had lean stumble for a few minutes. 1234 miles traveled (less than we wanted due to rain). On F7 I averaged 53.4 mpg and on F6 I averaged 55.2 mpg. I used 91 Octane fuel the entire trip and unless passing on the slab our average speed was 47 mph. Overall the bike did well. I have three instances of a stutter at highway speed. You'd be cruising along at 55 and all of a sudden the bike would sort of skip a beat like it temporarily didn't get fuel and it was just barely noticeable. I think given the history of the gas cap on this bike it may have tried to vapor lock. Im my mind, I think high humidity is causing the off idle stumble (with the AF_XIED installed) but I have no way to prove that other than my gut and it seemed to be repeatable. My overall impression of the AF-XIED is that it did it's job with the caveat's noted above. Next is to install the LC2 and log what is actually happening and adjust the AFR values to see if I can better target the lean areas. I am hoping this will reveal more about the MM ECU.
Charlie, When the bike stumbled on the several occasions that you mentioned, were you on setting 6 or 7? Likewise, what was the setting when you noticed the hesitation while at cruising speed? You have the pod mod and what other mods? Thanks, John
John, I have: Pod Mod Cannisterectomy De-Catted Eruption Mod Setting when it sputtered was F7 and FWIW it didn't do it set on F6 Cruising speed at the time was about 60 mph. Note this was not a flame out. Just a slight hesitation and it happened in just a blink
Thanks for the follow up Charlie. Since I've made no real modifications (other than the Lawn Boy pre-filter) mine probably runs a bit more rich than yours does. I'm still having stalling issues with the Dobeck unit so when I install the AF-XIED, I'm going to start with setting #5.
Reckon your on the money re: high humidity Charlie. I live in the tropics and even a Wuka didn't solve my stumbling at all. The only thing that seemed to make a difference was the ecu reset. That was in the dry season (lower temp and humidity) but now that it's warming up the stumbles are back worse than ever.
Baddrapp, I'm currently on 6.5/3/0.5/1/3/2 I started at 2.5/4/4/8/2/4.5 then 5/3/0.5/1/2/4.5 followed by 5.5 on green. Now, when first started from cold, the engine fails to keep running within several seconds. Upon the second start, it continues to run but is similar to idling without the Dobeck -- fluctuating idle. When first started it shows 5 green which then decreases while warming up.
Installed the AF-XIED today setting on #5. First short ride impression - idle is much less erratic and power is smoother across the rev range -- similar to Wuka King.
With the Dobeck I am at 7.5 5.5 4 1 2 3 settings. I am doing the Utah BDR next week. I set the above settings with their safr wide band guage.
I am pulling the AF-XIED today to send back to Roger. I would call the entire experiment a success. I would only get the lean stumble rarely and then it was under extreme conditions 97-98* and humidity higher than 80% . Taking this a step further I have purchased an LC2 by Innovatemotorsports.com and will incorporate it into the bike. This will allow data logging and this should tell us exactly how the bike is behaving AFR wise across the power band. It will allow me to target my AFR exactly where I need changes made.
