What should EGT be on a Cummins 5.9L?
What should EGT be on a Cummins 5.9L? EGT reductions will vary from 75°F on a stock truck and up to 300°F on heavily modified trucks.On 2003-2004 5.9L Cummins you will need to physically modify your wastegate to gain more turbo boost. Doing this without the Boost Fooler will result in check engine lights and codes set into the computer. Is there a way to cool down a Cummins Engine? Shutting your engine down after a heavy haul when the exhaust gas temperature (EGT) is above normal can result in turbo bearing damage, but now you can protect your turbo...