Engine backfires, turbo cuts off when hitting bumps
Hey guy all of a sudden my 07 GXP started having this weird problem where hitting decent sized bumps in the road (like the lip where a road meets a bridge, or where there's a lot of cracks in the road) my turbo will cut off. I can mash the throttle as hard as I want and get the RPMs up to 5500 and there's still no turbo.
But if I let off the accelerator completely, the turbo comes back.
This happens every single time I hit a bump. Sometimes the car backfires, just one quiet pop, sometimes it doesn't. Sometimes if it's a particularly bad road with really rough conditions it feels like the engine is about to stall, again, it all goes away when I take my foot off the accelerator and put it back on.
What's going on? Grounding issue? There's no codes for anything yet, and it's been about 140 miles since this started.