2009 with g56 SBDD. Edge Juice/w attitude (guages). Smarty 6.7 M.E. did these upgrades when truck was new, now with 300k I was gonna fix it up? I added II R2 injectors add a turbo kit (475) over stock. Truck runs good but I only get 30 psi, spools just like stock. Called turbo CO. They told me I needed new stock turbo - I did, no change. Then they said to call edge, - disconnected wiring harness for injectors and obd2. No Change. Took off my air filter. - No Change.. stopped by a diesel shop they said I needed EFI live. I don't know I'm scratching my head? Can anybody help me before I keep waisting money in this thing..