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Old 02-20-2013, 08:39 PM   #2035
Zuber's Avatar
Joined: Sep 2004
Location: Main Street, Shedd, Oregon
Oddometer: 2,175

Hey PDX, just back from work and bar. I'm looking at the stock map and also the akro map. KTM put in a large Ign advance right at 8% throttle and between 2500-4500 rpm, the worst is the 3500 curve, which is very close to 55 mph in 6th gear. I think this was for emissions.

As you open the throttle, it advances the IGN to 8% throttle - the throttle is overly sensitive.
Then it retards until 15% throttle - the throttle seems dead until you get past this spot.

I've smoothed out some of the 07-08 990's by cutting off this ign peak (retarding) right at 8% and the curves between 2500-4000. It's usually safe to retard. It may help to advance it just above 15% throttle, but don't go very far to be safe.

For an education, compare the ign maps between the stock 09-10 Adv and PowerTrippsWings maps. His are very smooth and work.
"Dad, can I get a motorcycle when I grow up?"
"Son, you can't do both"

Zuber screwed with this post 02-20-2013 at 08:53 PM
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