#7845, "RE: Kit Replacement Part Suggestions?" In response to In response to 0
Very good question.
If you are serious about modding your car more later (and it looks like it), I would suggest getting straight to the point with a few things. It's a smart move getting the FMIC (no point getting the sidemount and switching later).
In this case, if you can afford it, also go straight for the 3" downpipe.
The UDP does not interfere with the turbo kit at all.
Apart from that an AFC would be very useful too...