no boost

I recently blew the old 17t’s that came with my 135i when I bought it and bought replacements after installing everything (torqued to spec with all new hardware and seals minus new feed lines since they looked perfect) it was finally time to start the car. After cranking to get oil into the...

HELLO NEW TO THE BMW WORLD SO PLEASE BARE WITH ME ON WHAT IM GOING THRU.. SO IVE ONLY HAD THIS CAR FOR ABOUT A YEAR NOW AND THERE WAS UPGRADES DONE ON IT BEFORE HAND AND RECENTLY I HAVE WENT THRU IT AND NOTICED FEW THINGS NEEDED TO BE ADDRESSED RADIATOR HOSE,OIL FILTER HOUSING GASKET, MAIN BELT...

I have a problem with my car, recently just had a load of maintenance and some upgraded turbos installed. Anyway, the car will not build boost at all, the logs show Ecu psi is 0, boost is 0, target is 0 regardless of revs, checked everything so far, Boost solenoids, vacuum lines, charge pipe...