Final answer:
To increase the whistle of a diesel Dodge Ram 3500, modifications can be made to the exhaust or intake systems. Performance upgrades to the turbocharger, exhaust, or air intake can amplify the whistle sound. Professional installation is recommended to ensure safety and regulatory compliance.
Step-by-step explanation:
To make a diesel truck, such as a Dodge Ram 3500, have a louder whistle, you typically modify the truck's exhaust system or intake system. The characteristic whistle often comes from the turbocharger when it forces air into the engine's combustion chamber. Upgrading or modifying the existing intake or exhaust can alter the flow of air, making the whistle more noticeable. Performance exhaust systems, which are less restrictive, can amplify the sound, while aftermarket air filters or intake systems can also change the whistle's pitch and volume. Installing a larger turbocharger can also increase the whistle, but please note that significant changes to the truck's performance components should only be done by professionals and might affect your warranty or vehicle compliance with local regulations.