sportster 1200 timing
#11
Was able eliminate the pinging, smooth out the throttle response and got the fueling right...so yea select a map from Dynojet (spark tables will mostly be the same for basic stage setups) run a couple of auto tune sessions to correct the VE's (especially at low rpm)..adjust ur AFR as needed and then if ur unable to eliminate the pinging or smooth out the ride, then look into specific sections of the spark tables.
In India they say it's 91 octane but I think it's still around 89 or lower..fuel here is pretty bad for the cost.
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#14
Trouble with timing too!
I tried what I have found here but to no avail the latest timing changes I made were to try out the map posted here or pretty close to what b0fh posted it’s close and pulls good definitely smoother as well. I still hear some noise but I can’t tell exactly what the noise is cause I can’t seem to keep it making the noise for long. Nothing like when it was pinging so hard you could hear it over 70mph on the Highway through a full face helmet. Now it sounds more light like a bit of piston slap or similar. It has shifted to a lower rpm and different throttle opening so I believe it’s still probably light pinging. Any other solutions tried I am running non ethanol premium 93 octane. All I have is slip ons with inserts in them and a figure machine (knock off) air cleaner. Everything else is stock. I will post up a graph tomorrow if my current settings.
#15
I tried what I have found here but to no avail the latest timing changes I made were to try out the map posted here or pretty close to what b0fh posted it’s close and pulls good definitely smoother as well. I still hear some noise but I can’t tell exactly what the noise is cause I can’t seem to keep it making the noise for long. Nothing like when it was pinging so hard you could hear it over 70mph on the Highway through a full face helmet. Now it sounds more light like a bit of piston slap or similar. It has shifted to a lower rpm and different throttle opening so I believe it’s still probably light pinging. Any other solutions tried I am running non ethanol premium 93 octane. All I have is slip ons with inserts in them and a figure machine (knock off) air cleaner. Everything else is stock. I will post up a graph tomorrow if my current settings.
took that 1200 out of the barn for today' commute (not using it much because it is uninsured) and boy, it does run good ... accellerates like a raped ape compared to the barges (tourings) I usually ride now.
#16
Less timing.
Less as in bring it even closer to tdc?
I tried another map it’s a canned dynojet map and have run a couple auto tune sessions on it but my battery took a crap and won’t hold a charge now. So for the moment I am not fooling with it.
I did notice with those timing figures it pulled very hard and didn’t have any issues as far as running but I still had that pinging in some spots of the map. I need to export this auto tuned map and see what it has everything at. It does run pretty good and the pinging isn’t nearly what it was. If they would have put a proper knock sensor on it it would have been better but I realize with all the other sounds it would have never worked all that well.
I tried another map it’s a canned dynojet map and have run a couple auto tune sessions on it but my battery took a crap and won’t hold a charge now. So for the moment I am not fooling with it.
I did notice with those timing figures it pulled very hard and didn’t have any issues as far as running but I still had that pinging in some spots of the map. I need to export this auto tuned map and see what it has everything at. It does run pretty good and the pinging isn’t nearly what it was. If they would have put a proper knock sensor on it it would have been better but I realize with all the other sounds it would have never worked all that well.
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#19
We get 93 octane here. I can get it either with up to 10% ethanol or ethanol free. I am going to play with it a bit more I found some other maps I am going to load up today. I am going to see if I can attach them to this message.
They are kinda cut off at the bottom but this is a tune that was on a 1250 conversion. So it’s not ideal for a stock 883.
They are kinda cut off at the bottom but this is a tune that was on a 1250 conversion. So it’s not ideal for a stock 883.
#20