best way to diagnose? rollin road or my local vw specialist

[harkerg]

Not sure what to do first my boost is fluxuating from 0.1 to 1.5 will more likely fluxuate under load between 1 bar n 1.5 and as I get further up the range it settles at about 0.5 but sometimes drops off al together its bringing up no fault codes iv changed the n75 n the maf so what would you guys suggest is best get it on rollers to see what its doin is best or take it to my local vdub specialist also known as vasstech

[dom]

Vag specialist is probably best bet tbh, where are you located?

[harkerg]

Just near Newcastle mate dunno if you know the northeast well or not I was thinking that rollers might be better because theyd be able to plug itIin and see what it was doin while it was rolling the guy with the rollers said it could be the ecu so he was gonna try it with a manual boost control n if it holds boost obv its the map.