Fuel Pressure TB Regulator Tool – Once the rear throttle body has had the anti-adjust cap removed, the stock fuel pressure regulator becomes adjustable. Our tool will allow for accurate regulator adjustment while the engine is running and works well in conjunction with our fuel pressure assembly, a real time saving device and something you just can't live without if you have ever adjusted the regulator the old way. No more muss or fuss of having to keep removing the fuel lines, injector tower and disassembling the regulator each time to make a fuel pressure adjustment.