Bungs or No Bungs in DPF Delete Pipe
A common question that we get when customers are researching the type of exhaust to get for their truck when doing a DPF Delete is "Should I get pipes with bungs or with no bungs?". Another common question that we hear is "What are bung holes?". The purpose of this article is answer both of these questions and help you decide whether to choose DPF delete pipes (race pipes) with or without the bungs. Bungs are simply holes that are drilled into the exhaust pipes to accommodate the EGT and O2 sensors that are located on the CAT (catalytic converter) and the DPF (Diesel Particulate Filter) being removed. Do you need to have the bungs? No, but you might want them. It's going to depend on the type of programmer that you use and whether the wires leading to the sensors need to remain on the truck.
Although these sensors are going to be disabled by the DPF/CAT/EGR delete programming and do not need to be plugged into the pipes, some programmers such as the ones from GearboxZ do require that the wires remain plugged into the wiring harness. In this case, you can either tie the sensors up to keep them from dangling without bungs, or get pipes with the bungs and plug in the sensors so you won't have to tie them up and out of the way.
There are other race tuner brands that offer DPF delete programming (H&S Mini Maxx, PPEI EFILive AutoCal, Anarchy Diesel EFILive AutoCal, Motor Ops EFILive AutoCal, & Spartan Technologies) to name a few that do not require that the EGT and O2 sensor wires remain plugged into the truck. However, some diesel truck owners still opt to keep the wiring plugged in into the harness to help keep dirt and moisture out and a more "stock" appearance.
The simple answer to the question of whether you will need delete pipes and race exhaust with bungs or without bungs is that you can do it either way, it's really up to you. Since the sensors are disabled by the DPF/CAT/EGR programming, they do not need to be plugged into the pipes at all. You can tie them up without bungs or plug them into the bung holes.
If you have any further questions or need any assistance selecting the right programmer and exhaust parts to do a DPF delete, CAT delete or EGR valve delete on your diesel pickup, make sure to contact the expert staff at Dale's Super Store. We offer the best prices, best selection and best customer service in the industry. We've got race tuners, exhaust pipes with or without the bungs, EGR delete kits and air intake kits to maximize the horsepower and torque of your Powerstroke, Cummins or Duramax powered diesel truck!
Disclaimer: The products mentioned in this article are capable of disabling emissions equipment. If using DPF/CAT/EGR removed tuning, these high performance products are intended SOLELY for off-road use or closed-course racing use. Please check your local regulations before ordering. Buyer accepts responsibility for use.