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Title: 8D0907551D 0261206382 350243 FKVA Post by: M.Mischler on May 03, 2025, 12:02:51 PM I would like to know where I can find
- FKVA "Constant conversion factor for consumption display" in 8D0907551D 0261206382 350243. Does anyone know the address? Title: Re: 8D0907551D 0261206382 350243 FKVA Post by: rogerius on May 03, 2025, 12:26:30 PM I would like to know where I can find - FKVA "Constant conversion factor for consumption display" in 8D0907551D 0261206382 350243. Does anyone know the address? FKVA= 0x81A346 , value=0x10 Title: Re: 8D0907551D 0261206382 350243 FKVA Post by: gremlin on May 03, 2025, 09:39:12 PM I would like to know where I can find - FKVA "Constant conversion factor for consumption display" You need correct the fuel consumption data on the instrument panel after change fuel injectors? This map is not you need. Correct KVB value [cm^3/min] according fuel rate of new injector at 4 bar fuel pressure taken from injector manufacturer data. KVB -> 0x1A348, 8-bit. factor=3,046875 Title: Re: 8D0907551D 0261206382 350243 FKVA Post by: M.Mischler on May 04, 2025, 01:15:12 AM You need correct the fuel consumption data on the instrument panel after change fuel injectors? Hi Gremlin Thanks for your answer. Yes, that's exactly my goal. Correct KVB value [cm^3/min] according fuel rate of new injector at 4 bar fuel pressure taken from injector manufacturer data. I read in the S4 Wiki (https://s4wiki.com/wiki/Tuning#Consumption) that a maximum value of 776cc can be used for KVB. If the injectors are larger than 776cc, then according to my current understanding, it also needs to be adapted to FKVA. The user s5fourdoor has described how he calculates the new value for FKVA: ...Divide your injector size at the operating-pressure you use by the stock size at this operating pressure. OK: ev14's @ 4-bar ~= 630cc/min Stock b5 s4 ~= 349 cc/min (630/349) ~= 1.75. Set FKVA to 1.75... The user prj has mentioned that FKVA is only used in the case of Canbus clusters. ...FKVA is used only in case of canbus clusters... I don't know whether my S4 B5 cluster receives its data via CAN bus. That's why I decided to have a try and see what happens when I increase the FKVA.Title: Re: 8D0907551D 0261206382 350243 FKVA Post by: M.Mischler on May 04, 2025, 01:21:10 AM FKVA= 0x81A346 Hello Rogerius Thanks for your help. The address 0x81A346 seems to contain a typo. Is the address 0x1A346 correct? Title: Re: 8D0907551D 0261206382 350243 FKVA Post by: M.Mischler on May 04, 2025, 01:40:10 AM value=0x10 Note: I use the factor 0,0625 to get the decimal system value 1,0 . Title: Re: 8D0907551D 0261206382 350243 FKVA Post by: M.Mischler on May 04, 2025, 02:16:33 AM ...Is the address 0x1A346 correct? Info: the address 0x1A346 is correct. |