Yamaha YZF DENSO 3C3-8591A-XX 520040 File Info
You can view the file details below.
Hersteller
Yamaha
Serie
YZF
Baureihe
Output
172.0PS 126.5kW
StgHersteller
DENSO
StgBaureihe
3C3-8591A-XX
Stgnr_Stg
Stgnr_Her
Software
520040
SoftwareVersion
You can find the chip tuning file you are looking for on "Carecufile.com"