ok ware to start i have a 96 8 valve gti and have owned it for about 2 years was standard when i got it, since then its had,
bottem end rebuild
re bore, over sized pistons
ported head, exhaust, inlet
port and polish
high lift cam
4 branch
performence leads
titaniam plugs
panal filter
cold air feed
82% temp senser
twin fan convertion
de cat pipe
coilovers
polly bushed frunt end
still to do.
polly bush rear
back box
new bigger brakes
new rims
paint
leather seats
this is used daily not sure what she is running yet but a lot quicker than it used to thats for sure, being put on to rolling road in 2 months when the rest is finished then will make a thread off all the progress just taken ages as funds are a bit slower these days, kids like to spend daddys play money
hope this info fo kinda helps but all in all the 8 valve motor does need a lot on money spending to get it up to speed i am not sure how much i spent but its over 2k including the car itself, as for turbo, super charger tis is a very expencive route unless you want to swap the motor for a vr6 turbo or a 1.8t getting quite comman now though thats why i spent on a 8 valve motor not the quickest but noone realy does them.