ive just had a new bottom end and i got a stage 3 head ported polished and big valved with a piper 285t2 cam in standard turbo, turbo sys chip, pace intercooler

ive put it all bk 2gether when i try starting it, it takes ages to start then it wont tick over

now to this part which i cant understand the turbo i got a -31 which says 15psi on the bottom ive put it on my turbo and its boosting in the 20's ive tryed winding it down but i lost all boost then i done it with no load on the wastegate so it just cliped over and it peeks at 22 and hold 20psi and when i get to 90mph its cutting out as iff ive lost everything

and another part when the cars warm if i leave it for a while like 20 mins come bk to it and it seems like my battery is flat when it aint but if its cold it will start eventually


plz can someone help me