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Showing content with the highest reputation on 06/10/2020 in all areas

  1. So I've been working on the mapping for the EFI lately trying to solve a starting issue. The original map worked nicely when the engine had warmed up but it was a bitch to start. I thought the starting was down to setting up the TPS,balance, idle, and CO but turned out not to be the case. I was able to source another 3 Centi maps and 1 USA spec Daytona RS map which is basically a Centi map with higher rpm limit. Two of the maps from Karsten in Germany were both enhanced maps and the other Centi map and Daytona map was standard very kindly sent to me from Will Creedon in the US. These maps were a tremendous help in sorting the starting issue. The original map had the Centi, Main fuel, offset and ignition maps transferred over to the 15M .bin but the engine temp trim map and start enrichment map left as std V11. Looking at the Centi engine temp trim map it is wildly different from a V11. As an example this is the Difference in percentages between the Centi map and std V11 map for the same engine temperatures. I was starting the engine at around 10 deg C and as you can see the DIFFERENCE at that temp 25% richer for the Centi. This helped the starting a lot and the warmup was quite good.It stumbled a bit when the engine got to around 40 deg and required a little throttle monitoring for about 20 second or so and it rode nicely. To prevent the afore mentioned warmup stumble which was pretty minor I went back in and added some fuel in the 40-65 deg region. Because the Centi and V11 used different temp steps I left the std V11 temp steps and arrived at the new fuel values simply by interpolating them from the Centi map. The bike now warmed up really nicely. Once started the engine settled into a nice 1100 rpm indicated idle and was very nice. Initial hit of the button still needed more work though as i wasn't happy with that so I once again took a look at the start enrichment map. Both The Centi and V11 start enrichment maps looked pretty much identical except for the initial 16 seconds of cranking where the Centi is once again significantly different. Below you can see in the extreme RH column where I added fuel for the initial 16 seconds of the start. This is the DELTA map. The next thing was ignition advance. the first map had used the std Centi/Daytona ignition timing and that was a lot different from both the Karsten maps. The std was 6 deg of advance at 1000rpm which is what the engine will get at cranking speed but the Karsten map was 21 deg and at the next rpm break point dropped to 12 deg. I decided to up the advance to 16 on the cranking and the engine seemed to like this and the starting was now quite good. Better than I was accustomed to with the V11. Interestingly I have since noticed an 8 valve Grisso uses 21 deg of advance on cranking. The V11 uses 15 deg at cranking. Why the Centi only uses 6 deg I dont know but it seems to like more when cold. As is often the case when doing this kind of thing you can lose yourself a little with various adjustments so I may revisit the timing and see if it had the effect I thought it did or I got a little lost with the fuel mapping and the original timing was was ok. The problem with sorting an initial first cranking starting issue is that when the engine doesn't fire up on the first or second cranking attempt then it's hard to understand what the symptoms really are. When the engine is stone cold there is a lot of puddling of fuel in the manifolds and it needs to be very rich to accommodate this. The issue is if it doesn't fire up you end up with too much fuel in the manifold and that becomes an issue. The initial fire up is critical and if it doesn't happen fairly quickly you then don't know reliably what the affect your changes have made except they didn't work. You need to get it started and cleared out and fully warmed up and let it cool down again and try something else. takes a while and can get you a little lost. You are also dealing with 2 different XDF programs for the 16M and 15M which present data in different ways so some transferring maps to excel to compare was necessary. There's probably an easier way to do this in Tunerpro but being a computer Luddite makes it a longer process for me. Once again thanks to, Will, audiomick, and Karsten for the Maps and advice. Ciao EDIT.....forgot to mention I put a 50 klm country ride on the bike yesterday and it went very well. Rode and carburatted very nicely indeed.
    6 points
  2. 2 points
  3. I see the roach clip..
    2 points
  4. I decided to keep it simple so as to avoid exceeding my abilities. For those ever important Odyssey voltage checks, it finally struck me that I am a fumble-fingered fool and do not like fiddling around or dropping things. So, a couple of banana plugs, an SAE charging connector, a touch of solder and heat-shrink insulation and I can now plug-n-play to check the voltage.
    1 point
  5. I got distracted looking at your line-up. Wow, bud, nice!!
    1 point
  6. I had to split the Needle bearing outer race to remove it.In the process i dented the washer that is below it.I'd like to replace it.
    1 point
  7. If you mean washer #32 no it's not that straight forward. Ciao
    1 point
  8. Did someone say 1984. Ciao
    1 point
  9. Thanks Pete, I know if I buy one, my original will probably never leak again or fail...cheap insurance. Art
    1 point
  10. You guys must be waaaaay to law abiding, something like that in the UK would either get stolen or spray painted over in a matter of hours There's a very good reason all the cameras are mounted on posts or are difficult to get at, even then it still doesn't stop some of them getting vandilised from time to time. Average speed cameras are probably the way most places will go where practical, unfortunately very effective unless the monitered detection length is known and if they have a few up it becomes just about impossible. Situation will only get worse as the prices of cameras comes down
    1 point
  11. I absolutely love those mirrors[emoji1] Norton looks gorgeous! Sent from my iPhone using Tapatalk
    1 point
  12. This vid just popped back up on YouTube. Always worth a watch...and listen.
    1 point
  13. Duh , all laws are revenue producers under the guise of safety . If everyone did nothing illegal for 60 days ...............
    1 point
  14. John? If it would be any use I've got a really good low mileage early Stelvio oil cooler gathering dust in the shed if you want a bigger one. Yours for nix if you think it might help.
    1 point
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