Okay so I just recently put an Arashi 18g on my 2010 genesis coupe 2.0, along with a Mac boost control solenoid, have k&n airfilter, after all this is installed boost climbs well but it spikes, quickly. In the Video I’m in 4th gear doing a pull. And you can see it jumps from 4 to 9 then 15, then in the 15-21 psi range. It cuts fuel or the WG just dumps all at once bring my rpms low like I just down shifted but with no rev match, I checked for vac leaks but couldn’t find any. And yes I am getting tuned in 3 weeks which I’m sure will fix it but I just want to know what that is or why it’s doing it now. Is it building to much psi in the wg? I tried adjusting preload on my actuator but that did nothing. I tried adding a universal eBay boost controller but it still spikes up way past 15 even when the boost controller is all the way down to vent air.