I am thinking to replace my twins
 

My twins is ready to die in 10.000km or less.
So I am thinking for single setup but for low hp about 280-300hp.
I dont want to upgrade my fuel system, parts on engine etc.
And also is possible to keep the apexi power fc program or to modify it a little if I use 0,6-0,7 pressure?
What turbo do you suggest me ?I prefer garrett because it is easy to find one in Greece.

You're going to have to retune your PFC for a single turbo, regardless of the boost levels.
You're probably going to have to keep the cat, or put one on, to make sure the boost levels stay low since you don't want to upgrade anything else.

To4E 50 trim will work just fine for those power levels.

off topic but love the avatar.

Thanks ultmtrx8
I have stock cat soon I upgrade it to metalic apexi and r.b exhaust hks downpipe.