Originally Posted by firsttimer
I asked this before but didnt get any responses, is anyone planning on TUNING their 335 SE?
What are the thoughts on the DINAN tune and if you get it, would get the DINAN tag on the trunk lid?
I have JB4. It will void your warranty if the dealer knows about it...but JB4 is really easy to install/un-install. I used JB3 for 3 years on my old e90 and I've been using JB4 for a while now. I don't think that warranty should be a huge concern...you can always read and delete codes and un-install it before going to the dealer.