I have a 98 1.8t AEB with a chipped stock turbo, Im thinking of getting the
KO4 turbo im just looking to be around a stock s4 hp. For now that is. I have a couple of questions,
How much difference between ko3 chipped than ko4 chipped.
Weres the cheapest place to pick up a ko4-15
I have a APR chip would I have send my ecu back to them to have it re chippiped.

 

you won't be there
a little bit... a ko4 has more hp and tq.... but it is not like even a gtrs(which is like s4 power)
get a rp(i think)
you would want giac