Originally Posted by dieselmitchell
oh i almost forgot. first to preface, i have not had first hand experience with Dinan or their ecu upgrades; however, from second hand accounts and research on their website I have come to the understanding that certain mods (i.e. the ecu flash) do void your BMW factory warranty.... although dinan, in turn, picks up the warranty where BMW left off. therefore, since you have ht Dinan flash, your BMW warranty does not exist; Dinan now bears the responsibility of said warranty... anyone please correct me if i have misspoken. or verify if you can.
The Dinan mode does not cancel the BMW NA warranty. I had Danin S2 installed on my 335i at the Dinan shop immediately after I bought the car. Since than I had many warranty services done in my local BMW dealership, including updates of the Dinan software without any problems. Just the opposite, they give you a special attention.