Low RPM stumble after SE-255 cam install - will this tune out or did I F-up?
#21
03-18-2011, 11:49 AM
#23
03-18-2011, 04:29 PM
I have the same setup, an am currently using the same map. Make sure you using the stock spark plugs when your using the Smartune. What you want to do i load the stage 2 map again without any changes. When you reload the map again make sure you check the boxes for "Reset adaptive fuel", and "Enable Smartune reflash". This will erase any fuel adaptations made by the ECM and also change the map so that most cells are 14.6:1 AFR with 720MV Close Loop bias. You want to do 4 short runs, no more than 4 or 5 miles while recording with the VCI. The Smartune reflash map is a hot map so this is why you dont want to run the bike too long on this map. Get back run the recordings with the smartune and update the VE tables. This should add fuel to the higher rpms and take some away in the lower rpm, it sounds like you have a ignition timing or valve timing issue. The Stage 2 103map should take away 3to5 degrees timing in the low RPM areas and at 2 to 3 degrees in the higher 2500rpm and above. look at your timing tables to confirm if not its the wrong 103map, note that there is a high compression 103map that runs more retarded timing maps. If the bike ran fine with the stage 1 map and had a little pinging your cams are lined up correctly. Try adjusting timing in the problem areas and this should fix your problem if your running too much timing and not enough fuel it will hesitate if you run too little timing and too much fuel it will hesitate also. Use you knock sensor graph as a tool to adjust timing if your advancing, too much timing will cause the ion sensing system to activate and retard the timing if this is the case take away some degrees and add a little fuel in these areas
#24
03-18-2011, 07:57 PM
#25
03-18-2011, 11:27 PM
I have the same setup, an am currently using the same map. Make sure you using the stock spark plugs when your using the Smartune. What you want to do i load the stage 2 map again without any changes. When you reload the map again make sure you check the boxes for "Reset adaptive fuel", and "Enable Smartune reflash". This will erase any fuel adaptations made by the ECM and also change the map so that most cells are 14.6:1 AFR with 720MV Close Loop bias. You want to do 4 short runs, no more than 4 or 5 miles while recording with the VCI. The Smartune reflash map is a hot map so this is why you dont want to run the bike too long on this map. Get back run the recordings with the smartune and update the VE tables. This should add fuel to the higher rpms and take some away in the lower rpm, it sounds like you have a ignition timing or valve timing issue. The Stage 2 103map should take away 3to5 degrees timing in the low RPM areas and at 2 to 3 degrees in the higher 2500rpm and above. look at your timing tables to confirm if not its the wrong 103map, note that there is a high compression 103map that runs more retarded timing maps. If the bike ran fine with the stage 1 map and had a little pinging your cams are lined up correctly. Try adjusting timing in the problem areas and this should fix your problem if your running too much timing and not enough fuel it will hesitate if you run too little timing and too much fuel it will hesitate also. Use you knock sensor graph as a tool to adjust timing if your advancing, too much timing will cause the ion sensing system to activate and retard the timing if this is the case take away some degrees and add a little fuel in these areas
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