sup guys,
having some trouble with my wastegate. my last turbo set up i had the wastegate vaccum line connected to the turbo compressor housing. now i bought a new turbo and there was no threaded hole for a fitting,to run the line to the compressor housing. so some people told me to get my vacc source from the intake manifold. so i did and now the boost shoots up to 10-11psi when the wastegate spring is set to 8 (but only showed 6psi on last set-up,with vacc source at the turbo compressor housing). is there something messed up with my wastegate,or do you think its a boost spike,since now the vacc source is from the intake manifold and not directly on the compressor housing? wastegate worked fine the last time i had it on.

 

You want the WG vacuum source closer to the turbo. drill and tap a fitting in the compressor housing

 

how big is your turbo compared to your wastegate

 

what do you mean how big is my turbo vs my wastegate?

my wastegate is 38mm and my turbo is a t3/t04e 57 trim