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You are NEVER on the track at a dead idle and go WIDE open as hard as you can. The engine is NEVER at 2200 rpm while riding.
The engine in general makes peak torque around 8500 and revs to 13500. To achieve this is has BIG cams and HUGE ports.
Compared to a Nascar engine - which is TOTALLY not streetable for daily use - the 350 has BIGGER PORTS per it's size and a far larger cam per it's size
If we were to look at these cars - the solution to get "runnability" is to turn the idle speed up to where it doesn't die easily. They are RACE cars and NEVER idle out on the race track.
On a dirtbike - we generally hav the idle SOOO FAR low for what it is - because we like the way it sounds - and tips in to throttle increment for rideability.
So - if your bike bogs ON THE TRACK in real use - THEN ADDRESS that issue. But whacking it WIDE OPEN from dead zero - and the air speed is at zero to begin with - and can't pick up quickly enough. You could choose to alter the design - loose big power - and make it do this with ease - but why bother????
The TPS "fudgement" is the same as enriching the map. It tricks the ECU to thinking its at a higher up portion of the map and thus the ecu supplies more fuel and differed timing. Personally - if you feel it's an enrichement issue - remap.
Secondly - up the idle a tad - all the way until you feel like it pulls you around in tight corners then back it down.
I always liked to try to ride "around" issues - aka if a bike didn't like something I made sure not to do it.
As bikes have gotten better people seem to forget about this concept and often intentionally ride where a bike isn't happy because they are frustrated by it doing it and want others to see it would be my guess.
Out on track to see if you can make it bog - find an uphill, lug it really low then whack it in too tall a gear. Then slowly change those conditions and learn exactly what will make it bog and what wont...
If it's something you never will do while actually riding - dont worry about it.
Did you any complaints before touching it?
I assume the same goes for my 17, 250?
Post a reply to: 2016-2018 KTM 350 TPS setting