I have a 2006 turbo 4.8 4L80 3600-3800 stall convertor S475 T6 1.32AR turbo 1000cc inj cam springs 2bar OS pump gas 93 twin 450 pumps 3.23 gear 29" tire. Turbo is always been little slow to spool on the street then pulls hard. I know due to CID and turbo size that is to be expected but I cannot for the life of me figure out why when I go to the track I CANNOT get this thing to build boost on the foot brake. Will make 1psi and fall on its face let off the brake and it will creep out to 200-300ft and then take off like a rocket. I'm not sure what I'm missing. Would like someone just to see if my tune is wrong or if I have other issues. Thanks!4-21-17 current.hptTP RED TRUCK.cfg1st pass.hpl2nd pass.hpl