Review on 🔧 GrimmSpeed 070002 Boost Controller - Enhanced Black - Manual Control for Ultimate Performance by Gavin Ghram

bought this controller to reduce wastegate slip and increase boost levels in my 5.9 12V Cummins. I am sure this is not normal use for this product but it works great and I am very satisfied. From a stop in city traffic I used to get around 5-8psi, now I'm seeing around 10-20psi depending on the load. I maxed out at 40psi and this controller held it great and nearly doubled my acceleration. Can't say more about this regulator, the fine tuning of the boost levels is great, the construction was perfect, the amount of tubing that came with it was more than enough to get where I installed it (on the intake horn) , would buy again if it was a must and would recommend to anyone looking for good control of their wastegate.