I have 136hp model also ( lancia lybra ) and it has normal wastegate ihi-turbo . theres no problem using vnt. you already should have coming vacuum pipe to your turbo. its kind of vnt, that you have.. but anyway. chance the vnt-turbo vacuum clock to normal turbo overpressure clock, and thats it. at least in my case. use bleedvalve to have pressure you want. with gt2359 about 1.2 bar is over 200hp. but you need more fuel before that.
