I don't believe you do but it's best to ask kalpsn2000 as he has modded his where as I bought mine pre modded (2nd hand on here)
thanks for that, I have pmd him, once I find out I will source stock, wish I could just buy them pre done lol like you
I am not 100% sure either as I also bought mine pre modded off Eddie on here.
But I think if you want both clear then just remove the red lens from the nearside light and then put a red bulb in the offside one.
Maybe check with Eddie-NL as I got mine off him.
Regarding the coding, you have to disable the rear light cold lamp testing to prevent the risk of the LED bulbs blowing. But you can still use the lights without this (I currently am) until you can get someone to code that via VCDS.