Nothing untill you actually do mods.
AB injectors can be built to the same specs as AD's so if you get them built its a non issue.
Drop in turbo's don't fit ( besides the d66 for E99) so you wait untill you want to do a turbo, then either get the d66 or get a L99 pedestal and up pipes, and intake spider/plennums
HPOP is a weak point, but again, the companies who mod them don't seem to care what your core is starting out as.
Don't bother with the PCM, good tuners can tune it just as well
Same with the IDM, there isnt any real benefit to going to the later one
Injectors are pretty much brand new, unfortunately that came through some bad gas, insurance company suing, so i didnt get much pick on what went in there so they are just stock but less than a year on them, im guessing they are the early 99 but is there a chance they put the late 99 in them? haha probably not but if they didnt is it a big deal or do i need to get them built?
Yeah turbo will be down the road a bit most likely
I did plan to upgrade the hpop to the late 99 always figured that would be a weak point
good to know about pcm and idm. save a little money
My plan as of now is for this summer when id be doing it, first ill order and install gauges, that way i know my gains.
Then i figured air intake, exhaust. HPOP somewhere in there
then the fun part, a chip haha
as well as some cosmetic changes here and there of course.