hello i have a strange boost problem. If i put my foot hard on the accelerator the boost goes right up to 18 psi holds there and slowley drops off at higher rpms, this is normal. If i acclelerate in one gear and change to the next gear the boost only hits about 10 psi and car feels slow, it seems to have something to do with going through the gears, ive looked for leaks and checked plugs, anyone have an thoughts please.
