new guy with a 84 300sd few questions

[moneyman_09]

So i bought this thing 3 months ago. I have been tinkering with it so far i have installed elect fuel pump, inline fuel heater, and full crank of the alda. Still very little smoke. i have also had a 3 inch straight pipe installed and custom rigged huge air filter no it's not k&n or anything that has to be oiled. The boost gauge only reads 10 psi at wot. I am thinking about blocking the tube for the waste gate for more. Also the rear end sags kinda bad it does not bottom out but still does not look right. Any advice or help will be appreciated