Box delete is one of the most effective modifications you can perform on your vehicle, and it is nothing wrong in saying that it’s a bang for your buck. At DKU Performance, we not only deal with a full turbo-back exhaust system and cat-back exhaust system, but we also perform fair box deletes. Watch this BMW F30 340i B58 at DKU Performance getting its resonators deleted from our professional and experienced engineers, while still retaining the rear box for the valve system. Our customer wanted an increased sound but wanted to keep the OEM system so it doesn’t annoy the neighbours. So, we did it! deleting the resonator box was the perfect way of adding the sound our client wanted!