Here's why:
* Loudness: The most immediate consequence is the extreme noise. It will be incredibly loud, likely violating noise ordinances and making the truck unpleasant to drive, especially for extended periods.
* Drone: Straight pipes often create a significant drone at certain RPM ranges, which can be fatiguing and annoying.
* Emissions: Removing the muffler and other components of the exhaust system drastically increases harmful emissions. This can lead to failing emissions tests and potentially legal repercussions.
* Backpressure: While the 7.3L is relatively tolerant of exhaust modifications, completely eliminating backpressure can negatively affect turbocharger efficiency and potentially lead to increased EGTs (Exhaust Gas Temperatures), which can damage the engine.
* Turbocharger damage: The lack of sufficient backpressure can cause the turbocharger to over-spool, leading to premature wear and potential failure.
* Legal issues: Many jurisdictions have regulations regarding exhaust modifications, and a straight pipe setup is almost certainly non-compliant.
In short, while it might seem appealing for the perceived performance gains, the drawbacks far outweigh the benefits. A properly designed exhaust system that balances performance and sound is far superior to a simple straight pipe. If you're looking for increased performance, consider upgrading to a performance exhaust system that includes a muffler or resonator to manage sound and backpressure effectively.
