I have an innovate boost controller and a tial 44mm wastegate. When I set the boost controller to 10psi it would spike to 13-14psi. What do you guys think this could be? Have you guys ever had a problem with either one of these two things causing boost spike? Two things came to my mind either it's spiking because I don't have a dump tube or I need to go to a 48mm wastegate.
Thanks