How To Choose The Best Delete Kit For a 6.7 Cummins Engine When it comes to enhancing the performance of your 6.7 Cummins engine, choosing the right delete kit is crucial. Delete kits are popular upgrades designed to remove or bypass certain emissions components, improving horsepower, torque, and fuel efficiency. Here’s how to select the best delete kit for your 6.7 Cummins: 1. Understand...