How can I improve my car for semi-pro kings?

At the moment I’m doing around 8.2/8.3 1/4 mile runs, how can I take it to the next level?

Mods: N20 150 shot VX T56 RMAX II Advan Drag Slicks Honeycomb VX race 2 step ECU VX supreme pistons VX R Type intercooler VX Titanium R exhaust