2009 BERG TECH COURSE

DaleEO · Feb 23, 2011

Okay,

I got to talk with the guy who is in charge of building the motors for KTM off road today and told him about this thread and if he wouldn't mind giving me the straight dope on how the burn works, and how the system compensates as you ride.

Burn In: The MAP sensor is used as a type of baro sensor, and in combination with the air temp sensor, and the coolant temp sensor, the ECU places fuel delivery, timing etc to a place in the map using those inputs. EG, it determines density altitude and how much fuel should be delivered at that point.

As you ride the MAP sensor, air temp sensor, and coolant temp sensor fine tune the fuel delivery to maintain the predetermined point in the overall map for optimum performance. He went on to tell me that these changes are not huge, but, are noticeable.

Further, once a bike that came with an 02 sensor has had the closed course map flashed into it, the 02 sensor is no longer used.

And I believe him, as my bike has never thrown a code that is associated with the 02 sensor.

Dale

husadan · Feb 24, 2011

Hi all just about to add a fmf 4.1to my 2010 fe570 do I need to do the burn in and for how long.also i live in Australia do i need to have the ecu flashed with new map?Some threads say Aussie bike come with a richer map standard.Thanks for your thoughts.

tahoeacr · Feb 24, 2011

Thanks DaleEO.

Monday I spent about three hours on the dyno with the user tool. First hour was just getting the hang of the user tool. Finding out how much you need to change in percent to get what you want. Also I wasn't watching the sensor read outs at first. This cost me some time cause the bike really cools down fast. The ECU richens the mixture under 180 ECT. I had to keep the bike at the 185 temp level for consistency. All the runs were done with the seat off. I'm going to do the whole in the seat mod but won't have the user tool to tune when it is done. Damn things are on back order and I borrowed this one. One thing I didn't like which needs more research in is the Intake Air Temp sensor. It was 45-48 degrees in the dyno room and my IAT sensor peaked at 91 degrees. I have heat reflective material on the airbox boot so I can't see there being that much heat soak. Especially with the dyno fan blowing so hard against the bike. This could have something to do with the bikes flaming out after riding awhile. If the IAT is telling the ECU it is that much hotter than it is the ECU might be leaning out too much. If someone has this problem maybe they could leave the choke knob out and see if that helps. Pulling the knob out changed my idle air mix from 14.0:1 to 12.0:1. Now I'm dieing to pull the TB off to see what this knob does exactly.

2009 BERG TECH COURSE

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