You should perform a couple of prestart checks, such as making sure the fuel pump runs for 2-6 seconds when the key is turned on and that the engine light comes on for a second to verify that power is reaching the ECM. Also, check for fuel leaks. Then you're ready to start the engine. Our initial testdrive indicated that the exhaust was completely clogged, so Turbo City installed a Car Sound catalytic converter and a DynoMax performance muffler. Turbo City offers complete high-flow exhaust systems for YJs and TJs and the parts you'll need to piece together a similar system for CJs.