Yeah I having a bit of a problem with my turbo not boosting...Everything seem to hookup right, my turbo spool and could hear my bov going off, seem like air is pushing through but no boost??...It set about 8 psi or so, got a VAFController and shows my pressure reading like -0.2 psi not even a positive number.. So I have no ideal what's the problem here. Don't know too much about it, so if you got answer I need help?? thanks
Setup I have:
Greddy turbocharger Td04
JDM intercooler
DSM 450cc injectors
DSM bov
VAFC for fuel management
and stock internal

any help would be appreciated

 

what do you mean by AF controller? did you set your vafc up properly? and you probably just have a boost leak.

 

I'm pretty sure my vafc setup properly and my charge pipe and clamps and hoses seems to be tight with no air leak..From running 4k plus I should of feel some boost but nothing to be happy about. Whats the deal??..Think might be my vafc or so

 

do you have a cat? what size exhaust? My money still lies with a boost leak. Check your bov to see if thats leaking.

 

boost leak is most likely cause check everywhere my bov still blows off when i get a leak and i only make maybe 1 psi or so so check everything from turbo to throttle body.