Mapping options for TBI KTM 125XC

erik_94COBRA
Posts
1173
Joined
7/21/2016
Location
Houston-ish, TX, USA

Have done some reading on the mapping woes of the 2023+ KTM 125SX/125XC. My initial track test on the bike matches what a lot of folks describe: good low to mid, decent midrange, really falls flat on the top end. White map feels leaner/cleaner overall, green map feels richer in the middle and sluggish at lower RPM. No idea if my mapping is up to date, and I haven't checked TPS value or reset powervalve.

Trying to decide best bang for the buck option. Considering calling semi-local KTM dealers to see if they will update mapping for free, but suspect they'll want to charge something and it isn't clear if the updated mapping fixes these problems adequately. Leaning towards John Ross (tpituning/MotoXMapping) but have also considered the TSP ERM + cylinder head.

Any opinions on these options?

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NLMB150
Posts
194
Joined
2/3/2022
Location
Dying out west, TX, USA
5/7/2026 8:24am

Call up munn racing, i believe they can remap the stock ecu's. Ive heard some good results from them.

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