dont have a map sensor on the car yet, but when it was tuned it was either 26-27 peak boost, taper to about 23-24 redline with dejon tool mbc for now, but my next mods gonna switch up to a gruppe s 3 port...and what else i have in mind im hopin for spike with maybe 1 lb taper at redline.. well see though. but no knock

 

That is a good amount of taper. Are you gonna try to hold boost up top any other way? IE preload, Bov(crushed), etc

On my Black when i turned it up to 30psi for tuning sake it held 30psi from 5k all the way through 7400. It is a bigger turbo, but i also have other things to try to hold boost up top.

 

^^agreed...great numbers none the less