Im running a mbc and the advantages over the N75 i got was no Horrible pre/Boost spike like the n75 did and No Boost surging which to me was horrible.And you can hold what ever PSi/Bar you want within safe/Peraimeters of the Turbo and Ecu ..Plus more relibable...
It also Stop Random boost creep aswell
With the N75 on the Gt2x i was hitting 20psi and holding 19psi But with a low to high gear run it would peak at 26-27psi then just drop like a k03 would...
Now its holds Boost from 3k to just before the limiters @ 1.5bar(23psi)
Absolute Peice of piss to fit and id spend a little on getting one...theres 1000's on ebay from £10-£140
I got a turbosmart Billet one which IMHO is awesome...Its £40 cheaper than the forge one and does the same job...for £50 Just to pipes thats it...
And its Made by a Good manufacture as you know ''Turbosmart''...
It really Depends How your Mapper wants to map it or if the turbo reguires it..
Like Benny and philW run a MBC/Bleed valve there k03s with stage 2...
Im sure ive missed some points off ..