I have a 06 with 4k on it and switched from the factory 17 to the factory 20 inch wheels. I took it to the dealer and had them go into the computer and recallabrate for the speedometer and told them i didnt want any refalshes or updates my truck runs fine just change the speedo.So i pick it up drive it home and shut it off and it sounds like they gave me the reflash for the injectors to stay running for like 30 sec buzzing ect.How kind i find 0ut what they did and if it is the injector flash where they cycle after shut off should i go ahead and get the latest where they coils heat up instead of they injector cycleing.This iw why i didnt want any reflashes cause now it will never end.

 

Any info would be great.

 

I have been very happy with my injector reflash and it is supposed to save the injectors in the long run. 2004 6.0 DRWF350 cc. I drive it like i stole it most of the time.